./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 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 ../../../trunk/examples/svcomp/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 0.2.3-dev-c4f9136-m [2023-11-23 15:17:48,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:17:48,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 15:17:48,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:17:48,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:17:48,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:17:48,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:17:48,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:17:48,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 15:17:48,536 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 15:17:48,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:17:48,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:17:48,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:17:48,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:17:48,539 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:17:48,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:17:48,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 15:17:48,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:17:48,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:17:48,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 15:17:48,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:17:48,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 15:17:48,544 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 15:17:48,544 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:17:48,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:17:48,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:17:48,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:17:48,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:17:48,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:17:48,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:17:48,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:17:48,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 15:17:48,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:17:48,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:17:48,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:17:48,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:17:48,548 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 15:17:48,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:17:48,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:17:48,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb904c0981d69b458d5d2831cb1cef4022d2f4fca573c75928a054243d001b7a [2023-11-23 15:17:48,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:17:48,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:17:48,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:17:48,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:17:48,726 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:17:48,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2023-11-23 15:17:49,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:17:49,948 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:17:49,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2023-11-23 15:17:49,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d51588fd/346a026ea3af41da8a93b3692e0806a1/FLAG048837056 [2023-11-23 15:17:49,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d51588fd/346a026ea3af41da8a93b3692e0806a1 [2023-11-23 15:17:49,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:17:49,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:17:49,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:17:49,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:17:49,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:17:49,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:49" (1/1) ... [2023-11-23 15:17:49,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b60a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:49, skipping insertion in model container [2023-11-23 15:17:49,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:49" (1/1) ... [2023-11-23 15:17:50,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:17:50,181 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1268,1281] [2023-11-23 15:17:50,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:17:50,400 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:17:50,408 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1268,1281] [2023-11-23 15:17:50,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:17:50,571 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:17:50,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50 WrapperNode [2023-11-23 15:17:50,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:17:50,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:17:50,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:17:50,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:17:50,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:50,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,103 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4288 [2023-11-23 15:17:51,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:17:51,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:17:51,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:17:51,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:17:51,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,328 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]. [2023-11-23 15:17:51,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:17:51,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:17:51,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:17:51,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:17:51,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (1/1) ... [2023-11-23 15:17:51,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:17:51,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:51,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 15:17:51,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 15:17:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:17:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 15:17:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 15:17:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 15:17:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 15:17:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 15:17:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:17:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:17:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 15:17:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 15:17:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 15:17:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 15:17:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:17:51,934 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:17:51,936 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:17:53,886 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:17:53,960 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:17:53,960 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-23 15:17:53,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:53 BoogieIcfgContainer [2023-11-23 15:17:53,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:17:53,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:17:53,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:17:53,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:17:53,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:17:49" (1/3) ... [2023-11-23 15:17:53,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18374c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:53, skipping insertion in model container [2023-11-23 15:17:53,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:50" (2/3) ... [2023-11-23 15:17:53,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18374c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:53, skipping insertion in model container [2023-11-23 15:17:53,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:53" (3/3) ... [2023-11-23 15:17:53,967 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2023-11-23 15:17:53,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:17:53,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 15:17:54,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:17:54,040 INFO L357 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, mHoare=true, 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;@13cb3cd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:17:54,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 15:17:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 861 states, 853 states have (on average 1.6752637749120751) internal successors, (1429), 854 states have internal predecessors, (1429), 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) [2023-11-23 15:17:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-23 15:17:54,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:54,076 INFO L195 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] [2023-11-23 15:17:54,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:54,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1183569807, now seen corresponding path program 1 times [2023-11-23 15:17:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450344780] [2023-11-23 15:17:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-23 15:17:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-23 15:17:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:17:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:17:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-23 15:17:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:17:54,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450344780] [2023-11-23 15:17:54,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450344780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:54,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:54,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 15:17:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566879917] [2023-11-23 15:17:54,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:54,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 15:17:54,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 15:17:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 15:17:54,559 INFO L87 Difference]: Start difference. First operand has 861 states, 853 states have (on average 1.6752637749120751) internal successors, (1429), 854 states have internal predecessors, (1429), 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 156.0) internal successors, (312), 2 states have internal predecessors, (312), 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) [2023-11-23 15:17:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:54,645 INFO L93 Difference]: Finished difference Result 1715 states and 2873 transitions. [2023-11-23 15:17:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 15:17:54,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 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 334 [2023-11-23 15:17:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:54,665 INFO L225 Difference]: With dead ends: 1715 [2023-11-23 15:17:54,666 INFO L226 Difference]: Without dead ends: 859 [2023-11-23 15:17:54,673 INFO L412 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 [2023-11-23 15:17:54,678 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:54,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1396 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:17:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-11-23 15:17:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2023-11-23 15:17:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 852 states have (on average 1.6502347417840375) internal successors, (1406), 852 states have internal predecessors, (1406), 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) [2023-11-23 15:17:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1416 transitions. [2023-11-23 15:17:54,737 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1416 transitions. Word has length 334 [2023-11-23 15:17:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:54,738 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1416 transitions. [2023-11-23 15:17:54,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 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) [2023-11-23 15:17:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1416 transitions. [2023-11-23 15:17:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-23 15:17:54,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:54,743 INFO L195 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] [2023-11-23 15:17:54,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 15:17:54,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:54,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash 739740613, now seen corresponding path program 1 times [2023-11-23 15:17:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005935090] [2023-11-23 15:17:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:54,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-23 15:17:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-23 15:17:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:17:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:17:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-23 15:17:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:17:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005935090] [2023-11-23 15:17:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005935090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:17:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063007673] [2023-11-23 15:17:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:55,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:17:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:17:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:17:55,179 INFO L87 Difference]: Start difference. First operand 859 states and 1416 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2023-11-23 15:17:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:55,239 INFO L93 Difference]: Finished difference Result 1717 states and 2831 transitions. [2023-11-23 15:17:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:17:55,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 334 [2023-11-23 15:17:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:55,242 INFO L225 Difference]: With dead ends: 1717 [2023-11-23 15:17:55,243 INFO L226 Difference]: Without dead ends: 863 [2023-11-23 15:17:55,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:17:55,244 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 5 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:55,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2788 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:17:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-23 15:17:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2023-11-23 15:17:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 853 states have (on average 1.64947245017585) internal successors, (1407), 853 states have internal predecessors, (1407), 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) [2023-11-23 15:17:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1417 transitions. [2023-11-23 15:17:55,260 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1417 transitions. Word has length 334 [2023-11-23 15:17:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:55,260 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1417 transitions. [2023-11-23 15:17:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2023-11-23 15:17:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1417 transitions. [2023-11-23 15:17:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-23 15:17:55,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:55,264 INFO L195 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] [2023-11-23 15:17:55,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 15:17:55,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:55,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:55,265 INFO L85 PathProgramCache]: Analyzing trace with hash 291099465, now seen corresponding path program 1 times [2023-11-23 15:17:55,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307529401] [2023-11-23 15:17:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-23 15:17:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-23 15:17:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:17:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:17:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-23 15:17:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:17:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307529401] [2023-11-23 15:17:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307529401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524545126] [2023-11-23 15:17:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:55,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:55,689 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) [2023-11-23 15:17:55,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 15:17:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:17:56,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:17:56,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:17:56,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524545126] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:56,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:17:56,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-23 15:17:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045220381] [2023-11-23 15:17:56,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:17:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:56,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:17:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:17:56,226 INFO L87 Difference]: Start difference. First operand 860 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-11-23 15:17:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:56,284 INFO L93 Difference]: Finished difference Result 1579 states and 2601 transitions. [2023-11-23 15:17:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:17:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 337 [2023-11-23 15:17:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:56,288 INFO L225 Difference]: With dead ends: 1579 [2023-11-23 15:17:56,288 INFO L226 Difference]: Without dead ends: 861 [2023-11-23 15:17:56,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:17:56,289 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 5 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:56,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2783 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:17:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-23 15:17:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-23 15:17:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 854 states have (on average 1.648711943793911) internal successors, (1408), 854 states have internal predecessors, (1408), 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) [2023-11-23 15:17:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1418 transitions. [2023-11-23 15:17:56,301 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1418 transitions. Word has length 337 [2023-11-23 15:17:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:56,302 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1418 transitions. [2023-11-23 15:17:56,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-11-23 15:17:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1418 transitions. [2023-11-23 15:17:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-23 15:17:56,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:56,305 INFO L195 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] [2023-11-23 15:17:56,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 15:17:56,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:56,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:56,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash 534669315, now seen corresponding path program 1 times [2023-11-23 15:17:56,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:56,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874132895] [2023-11-23 15:17:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-23 15:17:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-23 15:17:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-23 15:17:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-23 15:17:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:17:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874132895] [2023-11-23 15:17:56,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874132895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397824828] [2023-11-23 15:17:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:56,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:56,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:56,837 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) [2023-11-23 15:17:56,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 15:17:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 15:17:57,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:17:57,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:17:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397824828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:17:57,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:17:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2023-11-23 15:17:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096363435] [2023-11-23 15:17:57,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:17:57,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:17:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:17:57,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:17:57,898 INFO L87 Difference]: Start difference. First operand 861 states and 1418 transitions. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:17:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:59,602 INFO L93 Difference]: Finished difference Result 2238 states and 3685 transitions. [2023-11-23 15:17:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:17:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 340 [2023-11-23 15:17:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:59,607 INFO L225 Difference]: With dead ends: 2238 [2023-11-23 15:17:59,607 INFO L226 Difference]: Without dead ends: 1383 [2023-11-23 15:17:59,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:17:59,610 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 4732 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 4251 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:59,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 4251 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 15:17:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-11-23 15:17:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 907. [2023-11-23 15:17:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 898 states have (on average 1.645879732739421) internal successors, (1478), 898 states have internal predecessors, (1478), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:17:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1492 transitions. [2023-11-23 15:17:59,634 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1492 transitions. Word has length 340 [2023-11-23 15:17:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:59,636 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1492 transitions. [2023-11-23 15:17:59,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:17:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1492 transitions. [2023-11-23 15:17:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-23 15:17:59,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:59,640 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:17:59,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 15:17:59,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 15:17:59,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:59,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1108985889, now seen corresponding path program 1 times [2023-11-23 15:17:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:59,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656151912] [2023-11-23 15:17:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:59,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-23 15:18:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-11-23 15:18:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-23 15:18:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-23 15:18:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:18:00,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656151912] [2023-11-23 15:18:00,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656151912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347229960] [2023-11-23 15:18:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:00,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:00,321 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) [2023-11-23 15:18:00,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 15:18:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:18:00,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:18:00,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 15:18:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347229960] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:18:00,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:18:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-23 15:18:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297387976] [2023-11-23 15:18:00,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:18:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:00,828 INFO L87 Difference]: Start difference. First operand 907 states and 1492 transitions. Second operand has 9 states, 9 states have (on average 47.44444444444444) internal successors, (427), 9 states have internal predecessors, (427), 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) [2023-11-23 15:18:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:00,981 INFO L93 Difference]: Finished difference Result 1823 states and 3002 transitions. [2023-11-23 15:18:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:18:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 47.44444444444444) internal successors, (427), 9 states have internal predecessors, (427), 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 344 [2023-11-23 15:18:00,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:00,984 INFO L225 Difference]: With dead ends: 1823 [2023-11-23 15:18:00,984 INFO L226 Difference]: Without dead ends: 926 [2023-11-23 15:18:00,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:18:00,986 INFO L413 NwaCegarLoop]: 1402 mSDtfsCounter, 46 mSDsluCounter, 5590 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6992 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:00,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6992 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:18:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-23 15:18:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 923. [2023-11-23 15:18:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 914 states have (on average 1.6433260393873086) internal successors, (1502), 914 states have internal predecessors, (1502), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1516 transitions. [2023-11-23 15:18:01,005 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1516 transitions. Word has length 344 [2023-11-23 15:18:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:01,005 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1516 transitions. [2023-11-23 15:18:01,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.44444444444444) internal successors, (427), 9 states have internal predecessors, (427), 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) [2023-11-23 15:18:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1516 transitions. [2023-11-23 15:18:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-11-23 15:18:01,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:01,009 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2023-11-23 15:18:01,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:01,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:01,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:01,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 281218975, now seen corresponding path program 2 times [2023-11-23 15:18:01,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:01,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410508426] [2023-11-23 15:18:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:01,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-23 15:18:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-23 15:18:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-11-23 15:18:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:18:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 15:18:01,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:01,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410508426] [2023-11-23 15:18:01,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410508426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520167719] [2023-11-23 15:18:01,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:18:01,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:01,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:01,638 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) [2023-11-23 15:18:01,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 15:18:02,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:18:02,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:18:02,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 15:18:02,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 15:18:02,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:18:02,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520167719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:02,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:18:02,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-11-23 15:18:02,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750429496] [2023-11-23 15:18:02,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:02,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:18:02,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:02,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:18:02,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:18:02,721 INFO L87 Difference]: Start difference. First operand 923 states and 1516 transitions. Second operand has 10 states, 10 states have (on average 31.9) internal successors, (319), 9 states have internal predecessors, (319), 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) [2023-11-23 15:18:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:05,330 INFO L93 Difference]: Finished difference Result 2676 states and 4389 transitions. [2023-11-23 15:18:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 15:18:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.9) internal successors, (319), 9 states have internal predecessors, (319), 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 356 [2023-11-23 15:18:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:05,337 INFO L225 Difference]: With dead ends: 2676 [2023-11-23 15:18:05,337 INFO L226 Difference]: Without dead ends: 2115 [2023-11-23 15:18:05,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2023-11-23 15:18:05,339 INFO L413 NwaCegarLoop]: 1444 mSDtfsCounter, 3859 mSDsluCounter, 8313 mSDsCounter, 0 mSdLazyCounter, 5966 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 9757 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:05,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3864 Valid, 9757 Invalid, 5990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5966 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 15:18:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-11-23 15:18:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 959. [2023-11-23 15:18:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 950 states have (on average 1.64) internal successors, (1558), 950 states have internal predecessors, (1558), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1572 transitions. [2023-11-23 15:18:05,362 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1572 transitions. Word has length 356 [2023-11-23 15:18:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:05,362 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1572 transitions. [2023-11-23 15:18:05,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.9) internal successors, (319), 9 states have internal predecessors, (319), 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) [2023-11-23 15:18:05,363 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1572 transitions. [2023-11-23 15:18:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-11-23 15:18:05,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:05,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2023-11-23 15:18:05,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:05,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:05,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash -723483781, now seen corresponding path program 1 times [2023-11-23 15:18:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017982829] [2023-11-23 15:18:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-23 15:18:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-23 15:18:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-23 15:18:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-23 15:18:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-23 15:18:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 15:18:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017982829] [2023-11-23 15:18:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017982829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245145126] [2023-11-23 15:18:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:05,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:05,995 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) [2023-11-23 15:18:06,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 15:18:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:06,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 15:18:06,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 15:18:06,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:18:06,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245145126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:18:06,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:18:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2023-11-23 15:18:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261176199] [2023-11-23 15:18:06,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:18:06,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 15:18:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 15:18:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:18:06,527 INFO L87 Difference]: Start difference. First operand 959 states and 1572 transitions. Second operand has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 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) [2023-11-23 15:18:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:06,724 INFO L93 Difference]: Finished difference Result 1911 states and 3135 transitions. [2023-11-23 15:18:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:18:06,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 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 357 [2023-11-23 15:18:06,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:06,728 INFO L225 Difference]: With dead ends: 1911 [2023-11-23 15:18:06,729 INFO L226 Difference]: Without dead ends: 966 [2023-11-23 15:18:06,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:18:06,730 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 58 mSDsluCounter, 11228 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 12635 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:06,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 12635 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:18:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-23 15:18:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 963. [2023-11-23 15:18:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 954 states have (on average 1.6394129979035639) internal successors, (1564), 954 states have internal predecessors, (1564), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1578 transitions. [2023-11-23 15:18:06,749 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1578 transitions. Word has length 357 [2023-11-23 15:18:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:06,750 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1578 transitions. [2023-11-23 15:18:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.533333333333335) internal successors, (353), 15 states have internal predecessors, (353), 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) [2023-11-23 15:18:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1578 transitions. [2023-11-23 15:18:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-23 15:18:06,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:06,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:06,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:06,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:06,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:06,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2067003529, now seen corresponding path program 2 times [2023-11-23 15:18:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:06,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890751329] [2023-11-23 15:18:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-11-23 15:18:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-23 15:18:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-23 15:18:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-23 15:18:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:18:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890751329] [2023-11-23 15:18:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890751329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:07,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:18:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:18:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498466283] [2023-11-23 15:18:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:18:07,226 INFO L87 Difference]: Start difference. First operand 963 states and 1578 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-11-23 15:18:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:07,279 INFO L93 Difference]: Finished difference Result 1907 states and 3128 transitions. [2023-11-23 15:18:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:07,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 360 [2023-11-23 15:18:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:07,283 INFO L225 Difference]: With dead ends: 1907 [2023-11-23 15:18:07,283 INFO L226 Difference]: Without dead ends: 967 [2023-11-23 15:18:07,286 INFO L412 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 [2023-11-23 15:18:07,287 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 5 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:07,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2787 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-23 15:18:07,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 964. [2023-11-23 15:18:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 955 states have (on average 1.638743455497382) internal successors, (1565), 955 states have internal predecessors, (1565), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1579 transitions. [2023-11-23 15:18:07,305 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1579 transitions. Word has length 360 [2023-11-23 15:18:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:07,305 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1579 transitions. [2023-11-23 15:18:07,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-11-23 15:18:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1579 transitions. [2023-11-23 15:18:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-11-23 15:18:07,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:07,308 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:07,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 15:18:07,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:07,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -571289982, now seen corresponding path program 1 times [2023-11-23 15:18:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824029921] [2023-11-23 15:18:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-11-23 15:18:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-23 15:18:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-23 15:18:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-23 15:18:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824029921] [2023-11-23 15:18:07,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824029921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424753432] [2023-11-23 15:18:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:07,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:07,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:07,592 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) [2023-11-23 15:18:07,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 15:18:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:08,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-23 15:18:08,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 15:18:08,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424753432] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:10,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 18 [2023-11-23 15:18:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554240485] [2023-11-23 15:18:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:10,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:18:10,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:10,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:18:10,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-23 15:18:10,298 INFO L87 Difference]: Start difference. First operand 964 states and 1579 transitions. Second operand has 10 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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) [2023-11-23 15:18:12,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:12,233 INFO L93 Difference]: Finished difference Result 2240 states and 3662 transitions. [2023-11-23 15:18:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:18:12,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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 363 [2023-11-23 15:18:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:12,239 INFO L225 Difference]: With dead ends: 2240 [2023-11-23 15:18:12,239 INFO L226 Difference]: Without dead ends: 1643 [2023-11-23 15:18:12,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2023-11-23 15:18:12,241 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 5622 mSDsluCounter, 4065 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5622 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 3529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:12,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5622 Valid, 5556 Invalid, 3529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3499 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 15:18:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2023-11-23 15:18:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 966. [2023-11-23 15:18:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 957 states have (on average 1.6332288401253918) internal successors, (1563), 957 states have internal predecessors, (1563), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1577 transitions. [2023-11-23 15:18:12,266 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1577 transitions. Word has length 363 [2023-11-23 15:18:12,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:12,266 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1577 transitions. [2023-11-23 15:18:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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) [2023-11-23 15:18:12,267 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1577 transitions. [2023-11-23 15:18:12,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-11-23 15:18:12,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:12,269 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:12,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:12,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:12,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:12,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -323600536, now seen corresponding path program 1 times [2023-11-23 15:18:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:12,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568381586] [2023-11-23 15:18:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:12,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-11-23 15:18:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-23 15:18:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-23 15:18:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-23 15:18:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:12,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568381586] [2023-11-23 15:18:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568381586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17045974] [2023-11-23 15:18:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:12,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:12,764 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) [2023-11-23 15:18:12,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 15:18:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:13,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 15:18:13,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 15:18:13,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:14,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17045974] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:14,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:14,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:18:14,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476155389] [2023-11-23 15:18:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:14,083 INFO L87 Difference]: Start difference. First operand 966 states and 1577 transitions. Second operand has 9 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 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) [2023-11-23 15:18:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:15,284 INFO L93 Difference]: Finished difference Result 1724 states and 2801 transitions. [2023-11-23 15:18:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 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 363 [2023-11-23 15:18:15,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:15,290 INFO L225 Difference]: With dead ends: 1724 [2023-11-23 15:18:15,290 INFO L226 Difference]: Without dead ends: 1125 [2023-11-23 15:18:15,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:18:15,292 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 4964 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4964 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:15,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4964 Valid, 2989 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:18:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2023-11-23 15:18:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 968. [2023-11-23 15:18:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 959 states have (on average 1.6308654848800834) internal successors, (1564), 959 states have internal predecessors, (1564), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1578 transitions. [2023-11-23 15:18:15,311 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1578 transitions. Word has length 363 [2023-11-23 15:18:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:15,311 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1578 transitions. [2023-11-23 15:18:15,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 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) [2023-11-23 15:18:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1578 transitions. [2023-11-23 15:18:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-23 15:18:15,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:15,315 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:15,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:15,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:15,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:15,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1916444138, now seen corresponding path program 1 times [2023-11-23 15:18:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516914406] [2023-11-23 15:18:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-11-23 15:18:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-23 15:18:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-23 15:18:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-23 15:18:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:15,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:15,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516914406] [2023-11-23 15:18:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516914406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:15,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758636158] [2023-11-23 15:18:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:15,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:15,800 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) [2023-11-23 15:18:15,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 15:18:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 15:18:16,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 15:18:16,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758636158] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:16,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:18:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934336545] [2023-11-23 15:18:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:16,997 INFO L87 Difference]: Start difference. First operand 968 states and 1578 transitions. Second operand has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 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) [2023-11-23 15:18:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:18,146 INFO L93 Difference]: Finished difference Result 1691 states and 2742 transitions. [2023-11-23 15:18:18,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:18,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 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 364 [2023-11-23 15:18:18,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:18,150 INFO L225 Difference]: With dead ends: 1691 [2023-11-23 15:18:18,150 INFO L226 Difference]: Without dead ends: 1090 [2023-11-23 15:18:18,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:18:18,155 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 2235 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:18,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 2847 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:18:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-11-23 15:18:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 972. [2023-11-23 15:18:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 963 states have (on average 1.6261682242990654) internal successors, (1566), 963 states have internal predecessors, (1566), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1580 transitions. [2023-11-23 15:18:18,196 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1580 transitions. Word has length 364 [2023-11-23 15:18:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:18,240 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1580 transitions. [2023-11-23 15:18:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 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) [2023-11-23 15:18:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1580 transitions. [2023-11-23 15:18:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-23 15:18:18,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:18,243 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:18,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 15:18:18,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 15:18:18,444 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:18,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1733495206, now seen corresponding path program 1 times [2023-11-23 15:18:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:18,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985162491] [2023-11-23 15:18:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:18:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-23 15:18:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-23 15:18:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:18,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985162491] [2023-11-23 15:18:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985162491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200290940] [2023-11-23 15:18:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:18,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:18,686 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) [2023-11-23 15:18:18,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 15:18:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:19,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 15:18:19,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 15:18:19,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200290940] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:18:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618699627] [2023-11-23 15:18:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:20,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:20,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:20,013 INFO L87 Difference]: Start difference. First operand 972 states and 1580 transitions. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 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) [2023-11-23 15:18:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:21,166 INFO L93 Difference]: Finished difference Result 1750 states and 2823 transitions. [2023-11-23 15:18:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 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 365 [2023-11-23 15:18:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:21,170 INFO L225 Difference]: With dead ends: 1750 [2023-11-23 15:18:21,170 INFO L226 Difference]: Without dead ends: 1145 [2023-11-23 15:18:21,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:18:21,171 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 4935 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:21,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4935 Valid, 3007 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:18:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2023-11-23 15:18:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 974. [2023-11-23 15:18:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 965 states have (on average 1.6238341968911918) internal successors, (1567), 965 states have internal predecessors, (1567), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1581 transitions. [2023-11-23 15:18:21,209 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1581 transitions. Word has length 365 [2023-11-23 15:18:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:21,209 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1581 transitions. [2023-11-23 15:18:21,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 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) [2023-11-23 15:18:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1581 transitions. [2023-11-23 15:18:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-23 15:18:21,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:21,213 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:21,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:21,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:21,430 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:21,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1613306598, now seen corresponding path program 1 times [2023-11-23 15:18:21,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:21,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173719217] [2023-11-23 15:18:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:21,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:18:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-23 15:18:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-11-23 15:18:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173719217] [2023-11-23 15:18:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173719217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156490554] [2023-11-23 15:18:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:21,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:21,695 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) [2023-11-23 15:18:21,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 15:18:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:22,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 15:18:22,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 15:18:22,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156490554] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:23,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 11] total 21 [2023-11-23 15:18:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337546014] [2023-11-23 15:18:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:18:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:18:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-11-23 15:18:23,097 INFO L87 Difference]: Start difference. First operand 974 states and 1581 transitions. Second operand has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 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) [2023-11-23 15:18:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:24,347 INFO L93 Difference]: Finished difference Result 1753 states and 2824 transitions. [2023-11-23 15:18:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 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 366 [2023-11-23 15:18:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:24,351 INFO L225 Difference]: With dead ends: 1753 [2023-11-23 15:18:24,351 INFO L226 Difference]: Without dead ends: 1146 [2023-11-23 15:18:24,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-11-23 15:18:24,353 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 6395 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6397 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:24,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6397 Valid, 2995 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 15:18:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-11-23 15:18:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 975. [2023-11-23 15:18:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 966 states have (on average 1.6231884057971016) internal successors, (1568), 966 states have internal predecessors, (1568), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1582 transitions. [2023-11-23 15:18:24,374 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1582 transitions. Word has length 366 [2023-11-23 15:18:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:24,374 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1582 transitions. [2023-11-23 15:18:24,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 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) [2023-11-23 15:18:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1582 transitions. [2023-11-23 15:18:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-23 15:18:24,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:24,377 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:24,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:24,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 15:18:24,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:24,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash 437677400, now seen corresponding path program 1 times [2023-11-23 15:18:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635360660] [2023-11-23 15:18:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:18:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-23 15:18:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-11-23 15:18:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:24,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:24,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635360660] [2023-11-23 15:18:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635360660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:24,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739839256] [2023-11-23 15:18:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:24,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:24,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:24,819 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) [2023-11-23 15:18:24,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 15:18:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 15:18:25,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 15:18:25,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:26,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739839256] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:26,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 10] total 20 [2023-11-23 15:18:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974396417] [2023-11-23 15:18:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:26,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:18:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:18:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-23 15:18:26,109 INFO L87 Difference]: Start difference. First operand 975 states and 1582 transitions. Second operand has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 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) [2023-11-23 15:18:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:27,882 INFO L93 Difference]: Finished difference Result 1758 states and 2828 transitions. [2023-11-23 15:18:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:18:27,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 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 366 [2023-11-23 15:18:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:27,889 INFO L225 Difference]: With dead ends: 1758 [2023-11-23 15:18:27,889 INFO L226 Difference]: Without dead ends: 1124 [2023-11-23 15:18:27,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-11-23 15:18:27,905 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 2236 mSDsluCounter, 5562 mSDsCounter, 0 mSdLazyCounter, 4872 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 4879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:27,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2241 Valid, 6467 Invalid, 4879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 4872 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 15:18:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-11-23 15:18:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 977. [2023-11-23 15:18:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 968 states have (on average 1.6208677685950412) internal successors, (1569), 968 states have internal predecessors, (1569), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1583 transitions. [2023-11-23 15:18:27,929 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1583 transitions. Word has length 366 [2023-11-23 15:18:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:27,930 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1583 transitions. [2023-11-23 15:18:27,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 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) [2023-11-23 15:18:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1583 transitions. [2023-11-23 15:18:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:18:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:27,932 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:27,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:28,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 15:18:28,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:28,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1648863016, now seen corresponding path program 1 times [2023-11-23 15:18:28,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:28,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176831029] [2023-11-23 15:18:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:28,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:18:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:18:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:28,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176831029] [2023-11-23 15:18:28,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176831029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286743942] [2023-11-23 15:18:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:28,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:28,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:28,372 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) [2023-11-23 15:18:28,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 15:18:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 15:18:28,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 15:18:29,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:29,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286743942] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:29,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 7] total 19 [2023-11-23 15:18:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907825766] [2023-11-23 15:18:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:29,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:18:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:18:29,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:29,551 INFO L87 Difference]: Start difference. First operand 977 states and 1583 transitions. Second operand has 12 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 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) [2023-11-23 15:18:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:32,291 INFO L93 Difference]: Finished difference Result 2363 states and 3798 transitions. [2023-11-23 15:18:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 15:18:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 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 367 [2023-11-23 15:18:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:32,301 INFO L225 Difference]: With dead ends: 2363 [2023-11-23 15:18:32,301 INFO L226 Difference]: Without dead ends: 1750 [2023-11-23 15:18:32,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-11-23 15:18:32,306 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 4148 mSDsluCounter, 7323 mSDsCounter, 0 mSdLazyCounter, 5765 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4153 SdHoareTripleChecker+Valid, 8652 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:32,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4153 Valid, 8652 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5765 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 15:18:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2023-11-23 15:18:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1579. [2023-11-23 15:18:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1563 states have (on average 1.617402431222009) internal successors, (2528), 1563 states have internal predecessors, (2528), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 15:18:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2556 transitions. [2023-11-23 15:18:32,357 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2556 transitions. Word has length 367 [2023-11-23 15:18:32,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:32,358 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 2556 transitions. [2023-11-23 15:18:32,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 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) [2023-11-23 15:18:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2556 transitions. [2023-11-23 15:18:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:18:32,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:32,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:32,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:32,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 15:18:32,574 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:32,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash 779055998, now seen corresponding path program 1 times [2023-11-23 15:18:32,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:32,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834710964] [2023-11-23 15:18:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:32,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:18:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:18:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:32,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834710964] [2023-11-23 15:18:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834710964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929534448] [2023-11-23 15:18:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:32,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:32,832 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) [2023-11-23 15:18:32,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 15:18:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:33,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 15:18:33,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 15:18:33,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:34,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929534448] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:34,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:34,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 7] total 16 [2023-11-23 15:18:34,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783124939] [2023-11-23 15:18:34,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:34,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:18:34,043 INFO L87 Difference]: Start difference. First operand 1579 states and 2556 transitions. Second operand has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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) [2023-11-23 15:18:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:35,981 INFO L93 Difference]: Finished difference Result 2347 states and 3777 transitions. [2023-11-23 15:18:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:18:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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 367 [2023-11-23 15:18:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:35,987 INFO L225 Difference]: With dead ends: 2347 [2023-11-23 15:18:35,987 INFO L226 Difference]: Without dead ends: 1740 [2023-11-23 15:18:35,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:18:35,988 INFO L413 NwaCegarLoop]: 1942 mSDtfsCounter, 3329 mSDsluCounter, 5922 mSDsCounter, 0 mSdLazyCounter, 4401 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 7864 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:35,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 7864 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4401 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 15:18:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2023-11-23 15:18:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1580. [2023-11-23 15:18:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1564 states have (on average 1.617007672634271) internal successors, (2529), 1564 states have internal predecessors, (2529), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 15:18:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2557 transitions. [2023-11-23 15:18:36,026 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2557 transitions. Word has length 367 [2023-11-23 15:18:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:36,027 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2557 transitions. [2023-11-23 15:18:36,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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) [2023-11-23 15:18:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2557 transitions. [2023-11-23 15:18:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:18:36,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:36,029 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:36,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 15:18:36,242 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:36,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash -114430340, now seen corresponding path program 1 times [2023-11-23 15:18:36,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044637668] [2023-11-23 15:18:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:18:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:18:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:36,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:36,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044637668] [2023-11-23 15:18:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044637668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:36,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577136102] [2023-11-23 15:18:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:36,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:36,515 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) [2023-11-23 15:18:36,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 15:18:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 15:18:36,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 15:18:37,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:37,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577136102] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:18:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27569836] [2023-11-23 15:18:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:37,710 INFO L87 Difference]: Start difference. First operand 1580 states and 2557 transitions. Second operand has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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) [2023-11-23 15:18:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:38,829 INFO L93 Difference]: Finished difference Result 2968 states and 4780 transitions. [2023-11-23 15:18:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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 367 [2023-11-23 15:18:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:38,835 INFO L225 Difference]: With dead ends: 2968 [2023-11-23 15:18:38,835 INFO L226 Difference]: Without dead ends: 1752 [2023-11-23 15:18:38,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:18:38,837 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 2217 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:38,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 2985 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 15:18:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2023-11-23 15:18:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1578. [2023-11-23 15:18:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1562 states have (on average 1.617157490396927) internal successors, (2526), 1562 states have internal predecessors, (2526), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 15:18:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2554 transitions. [2023-11-23 15:18:38,869 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2554 transitions. Word has length 367 [2023-11-23 15:18:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:38,869 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2554 transitions. [2023-11-23 15:18:38,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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) [2023-11-23 15:18:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2554 transitions. [2023-11-23 15:18:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:18:38,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:38,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:38,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:39,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:39,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:39,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash -581610216, now seen corresponding path program 1 times [2023-11-23 15:18:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:39,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440926707] [2023-11-23 15:18:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:18:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:18:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:39,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440926707] [2023-11-23 15:18:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440926707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208119563] [2023-11-23 15:18:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:39,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:39,316 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) [2023-11-23 15:18:39,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 15:18:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:39,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 15:18:39,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 15:18:40,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:40,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208119563] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:40,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:18:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481876453] [2023-11-23 15:18:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:40,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:40,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:40,461 INFO L87 Difference]: Start difference. First operand 1578 states and 2554 transitions. Second operand has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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) [2023-11-23 15:18:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:41,602 INFO L93 Difference]: Finished difference Result 1731 states and 2785 transitions. [2023-11-23 15:18:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:41,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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 367 [2023-11-23 15:18:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:41,621 INFO L225 Difference]: With dead ends: 1731 [2023-11-23 15:18:41,636 INFO L226 Difference]: Without dead ends: 1126 [2023-11-23 15:18:41,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:18:41,637 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 2229 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:41,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 2914 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:18:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-23 15:18:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 979. [2023-11-23 15:18:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 970 states have (on average 1.6195876288659794) internal successors, (1571), 970 states have internal predecessors, (1571), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 15:18:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1585 transitions. [2023-11-23 15:18:41,670 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1585 transitions. Word has length 367 [2023-11-23 15:18:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:41,670 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1585 transitions. [2023-11-23 15:18:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 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) [2023-11-23 15:18:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1585 transitions. [2023-11-23 15:18:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:18:41,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:41,688 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:41,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:41,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 15:18:41,889 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:41,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1447039082, now seen corresponding path program 1 times [2023-11-23 15:18:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:41,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434289686] [2023-11-23 15:18:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:41,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-23 15:18:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:18:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:18:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:18:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434289686] [2023-11-23 15:18:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434289686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548762746] [2023-11-23 15:18:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:42,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:42,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:42,128 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) [2023-11-23 15:18:42,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 15:18:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 15:18:42,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:42,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:18:42,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548762746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:42,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:18:42,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-23 15:18:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788737774] [2023-11-23 15:18:42,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:42,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:18:42,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:18:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:18:42,661 INFO L87 Difference]: Start difference. First operand 979 states and 1585 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) [2023-11-23 15:18:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:43,521 INFO L93 Difference]: Finished difference Result 2739 states and 4396 transitions. [2023-11-23 15:18:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:18:43,522 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 367 [2023-11-23 15:18:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:43,526 INFO L225 Difference]: With dead ends: 2739 [2023-11-23 15:18:43,526 INFO L226 Difference]: Without dead ends: 1695 [2023-11-23 15:18:43,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:18:43,528 INFO L413 NwaCegarLoop]: 2119 mSDtfsCounter, 2222 mSDsluCounter, 7109 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 9228 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 9228 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 15:18:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-23 15:18:43,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1103. [2023-11-23 15:18:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1089 states have (on average 1.595959595959596) internal successors, (1738), 1089 states have internal predecessors, (1738), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 15:18:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1762 transitions. [2023-11-23 15:18:43,553 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1762 transitions. Word has length 367 [2023-11-23 15:18:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:43,553 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1762 transitions. [2023-11-23 15:18:43,553 INFO L496 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) [2023-11-23 15:18:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1762 transitions. [2023-11-23 15:18:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:18:43,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:43,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:43,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-23 15:18:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:43,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1982791714, now seen corresponding path program 1 times [2023-11-23 15:18:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:43,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126062609] [2023-11-23 15:18:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:18:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:18:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:18:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:18:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:18:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126062609] [2023-11-23 15:18:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126062609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611782682] [2023-11-23 15:18:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:43,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:43,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:43,982 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) [2023-11-23 15:18:43,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 15:18:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 15:18:44,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 15:18:44,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611782682] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 11 [2023-11-23 15:18:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935647630] [2023-11-23 15:18:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:45,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:18:45,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:18:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:18:45,072 INFO L87 Difference]: Start difference. First operand 1103 states and 1762 transitions. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2023-11-23 15:18:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:46,197 INFO L93 Difference]: Finished difference Result 2678 states and 4223 transitions. [2023-11-23 15:18:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:46,197 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), 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 367 [2023-11-23 15:18:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:46,208 INFO L225 Difference]: With dead ends: 2678 [2023-11-23 15:18:46,208 INFO L226 Difference]: Without dead ends: 1825 [2023-11-23 15:18:46,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:18:46,211 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 3005 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:46,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3010 Valid, 3670 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:18:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2023-11-23 15:18:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1693. [2023-11-23 15:18:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1672 states have (on average 1.5998803827751196) internal successors, (2675), 1672 states have internal predecessors, (2675), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 15:18:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2713 transitions. [2023-11-23 15:18:46,258 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2713 transitions. Word has length 367 [2023-11-23 15:18:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:46,258 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2713 transitions. [2023-11-23 15:18:46,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2023-11-23 15:18:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2713 transitions. [2023-11-23 15:18:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-11-23 15:18:46,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:46,261 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:46,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:46,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:46,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:46,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1901092516, now seen corresponding path program 1 times [2023-11-23 15:18:46,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:46,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962915485] [2023-11-23 15:18:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:18:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:18:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-23 15:18:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-23 15:18:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-23 15:18:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:46,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962915485] [2023-11-23 15:18:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962915485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182248399] [2023-11-23 15:18:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:46,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:46,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:46,720 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) [2023-11-23 15:18:46,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 15:18:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:47,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-23 15:18:47,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 15:18:47,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:47,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182248399] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:47,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:47,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [4, 5] total 20 [2023-11-23 15:18:47,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610318845] [2023-11-23 15:18:47,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:47,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:18:47,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:18:47,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-23 15:18:47,756 INFO L87 Difference]: Start difference. First operand 1693 states and 2713 transitions. Second operand has 14 states, 14 states have (on average 23.428571428571427) internal successors, (328), 14 states have internal predecessors, (328), 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) [2023-11-23 15:18:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:53,405 INFO L93 Difference]: Finished difference Result 7669 states and 12161 transitions. [2023-11-23 15:18:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 15:18:53,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.428571428571427) internal successors, (328), 14 states have internal predecessors, (328), 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 368 [2023-11-23 15:18:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:53,416 INFO L225 Difference]: With dead ends: 7669 [2023-11-23 15:18:53,416 INFO L226 Difference]: Without dead ends: 6985 [2023-11-23 15:18:53,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=1887, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 15:18:53,420 INFO L413 NwaCegarLoop]: 2265 mSDtfsCounter, 9476 mSDsluCounter, 16460 mSDsCounter, 0 mSdLazyCounter, 9416 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9489 SdHoareTripleChecker+Valid, 18725 SdHoareTripleChecker+Invalid, 9457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 9416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:53,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9489 Valid, 18725 Invalid, 9457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 9416 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-23 15:18:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2023-11-23 15:18:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 1780. [2023-11-23 15:18:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1755 states have (on average 1.592022792022792) internal successors, (2794), 1755 states have internal predecessors, (2794), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-23 15:18:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2840 transitions. [2023-11-23 15:18:53,493 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2840 transitions. Word has length 368 [2023-11-23 15:18:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:53,493 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 2840 transitions. [2023-11-23 15:18:53,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.428571428571427) internal successors, (328), 14 states have internal predecessors, (328), 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) [2023-11-23 15:18:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2840 transitions. [2023-11-23 15:18:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-11-23 15:18:53,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:53,496 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:53,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:53,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:53,710 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:53,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1408466342, now seen corresponding path program 1 times [2023-11-23 15:18:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722686723] [2023-11-23 15:18:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:53,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:18:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:18:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-23 15:18:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-23 15:18:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-23 15:18:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:53,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:53,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722686723] [2023-11-23 15:18:53,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722686723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:53,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784675799] [2023-11-23 15:18:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:53,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:53,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:53,936 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:18:53,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 15:18:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:54,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 15:18:54,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:54,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784675799] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:54,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-11-23 15:18:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112823598] [2023-11-23 15:18:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:18:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:18:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:54,496 INFO L87 Difference]: Start difference. First operand 1780 states and 2840 transitions. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-23 15:18:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:54,587 INFO L93 Difference]: Finished difference Result 1786 states and 2847 transitions. [2023-11-23 15:18:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:18:54,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 [2023-11-23 15:18:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:54,592 INFO L225 Difference]: With dead ends: 1786 [2023-11-23 15:18:54,592 INFO L226 Difference]: Without dead ends: 1686 [2023-11-23 15:18:54,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:54,593 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 1 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:54,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4162 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-11-23 15:18:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1686. [2023-11-23 15:18:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1666 states have (on average 1.602641056422569) internal successors, (2670), 1666 states have internal predecessors, (2670), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 15:18:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2706 transitions. [2023-11-23 15:18:54,640 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2706 transitions. Word has length 368 [2023-11-23 15:18:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:54,640 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2706 transitions. [2023-11-23 15:18:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-23 15:18:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2706 transitions. [2023-11-23 15:18:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-11-23 15:18:54,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:54,643 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:54,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:54,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:54,857 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:54,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:54,857 INFO L85 PathProgramCache]: Analyzing trace with hash 714510450, now seen corresponding path program 1 times [2023-11-23 15:18:54,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:54,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021781299] [2023-11-23 15:18:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:54,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:18:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:18:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-23 15:18:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-23 15:18:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-23 15:18:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021781299] [2023-11-23 15:18:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021781299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505595251] [2023-11-23 15:18:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:55,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:55,098 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:18:55,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 15:18:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-23 15:18:55,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 15:18:55,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:56,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505595251] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:56,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 9] total 18 [2023-11-23 15:18:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583094635] [2023-11-23 15:18:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:56,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:18:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:18:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-23 15:18:56,046 INFO L87 Difference]: Start difference. First operand 1686 states and 2706 transitions. Second operand has 8 states, 8 states have (on average 41.125) internal successors, (329), 8 states have internal predecessors, (329), 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) [2023-11-23 15:18:57,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:57,335 INFO L93 Difference]: Finished difference Result 4316 states and 6873 transitions. [2023-11-23 15:18:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 15:18:57,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 41.125) internal successors, (329), 8 states have internal predecessors, (329), 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 369 [2023-11-23 15:18:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:57,339 INFO L225 Difference]: With dead ends: 4316 [2023-11-23 15:18:57,339 INFO L226 Difference]: Without dead ends: 3503 [2023-11-23 15:18:57,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2023-11-23 15:18:57,341 INFO L413 NwaCegarLoop]: 1866 mSDtfsCounter, 2545 mSDsluCounter, 6080 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 7946 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:57,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2550 Valid, 7946 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:18:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2023-11-23 15:18:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 1710. [2023-11-23 15:18:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1688 states have (on average 1.5971563981042654) internal successors, (2696), 1688 states have internal predecessors, (2696), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 15:18:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2736 transitions. [2023-11-23 15:18:57,469 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2736 transitions. Word has length 369 [2023-11-23 15:18:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:57,469 INFO L495 AbstractCegarLoop]: Abstraction has 1710 states and 2736 transitions. [2023-11-23 15:18:57,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 41.125) internal successors, (329), 8 states have internal predecessors, (329), 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) [2023-11-23 15:18:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2736 transitions. [2023-11-23 15:18:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:18:57,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:57,478 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:18:57,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:57,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-23 15:18:57,692 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:57,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:57,693 INFO L85 PathProgramCache]: Analyzing trace with hash -259907556, now seen corresponding path program 1 times [2023-11-23 15:18:57,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:57,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909288964] [2023-11-23 15:18:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:18:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:18:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:18:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:18:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:18:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:57,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909288964] [2023-11-23 15:18:57,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909288964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:57,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185838911] [2023-11-23 15:18:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:57,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:57,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:57,902 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:18:57,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 15:18:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:58,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 15:18:58,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:18:58,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:18:58,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185838911] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:58,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:58,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 6] total 19 [2023-11-23 15:18:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451180960] [2023-11-23 15:18:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:18:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:18:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:18:58,976 INFO L87 Difference]: Start difference. First operand 1710 states and 2736 transitions. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 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) [2023-11-23 15:19:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:01,661 INFO L93 Difference]: Finished difference Result 4221 states and 6668 transitions. [2023-11-23 15:19:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 15:19:01,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 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 370 [2023-11-23 15:19:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:01,665 INFO L225 Difference]: With dead ends: 4221 [2023-11-23 15:19:01,665 INFO L226 Difference]: Without dead ends: 2527 [2023-11-23 15:19:01,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-11-23 15:19:01,667 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 5668 mSDsluCounter, 7134 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5673 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 5714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:01,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5673 Valid, 8461 Invalid, 5714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 15:19:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2023-11-23 15:19:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2291. [2023-11-23 15:19:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2262 states have (on average 1.6007957559681698) internal successors, (3621), 2262 states have internal predecessors, (3621), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-23 15:19:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3675 transitions. [2023-11-23 15:19:01,734 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3675 transitions. Word has length 370 [2023-11-23 15:19:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:01,734 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3675 transitions. [2023-11-23 15:19:01,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 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) [2023-11-23 15:19:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3675 transitions. [2023-11-23 15:19:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:01,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:01,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:01,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-23 15:19:01,951 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:01,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1991137846, now seen corresponding path program 1 times [2023-11-23 15:19:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:01,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916489323] [2023-11-23 15:19:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:01,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:02,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:02,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916489323] [2023-11-23 15:19:02,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916489323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068899343] [2023-11-23 15:19:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:02,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:02,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:02,168 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:02,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 15:19:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:02,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 15:19:02,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:03,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:03,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068899343] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:03,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:03,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 6] total 16 [2023-11-23 15:19:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451628979] [2023-11-23 15:19:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:19:03,132 INFO L87 Difference]: Start difference. First operand 2291 states and 3675 transitions. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2023-11-23 15:19:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:04,778 INFO L93 Difference]: Finished difference Result 3050 states and 4875 transitions. [2023-11-23 15:19:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:19:04,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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 370 [2023-11-23 15:19:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:04,810 INFO L225 Difference]: With dead ends: 3050 [2023-11-23 15:19:04,811 INFO L226 Difference]: Without dead ends: 2451 [2023-11-23 15:19:04,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:19:04,812 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 3327 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 3824 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 5845 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:04,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 5845 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3824 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 15:19:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-11-23 15:19:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2293. [2023-11-23 15:19:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2264 states have (on average 1.6002650176678446) internal successors, (3623), 2264 states have internal predecessors, (3623), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-23 15:19:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3677 transitions. [2023-11-23 15:19:04,889 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3677 transitions. Word has length 370 [2023-11-23 15:19:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:04,890 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 3677 transitions. [2023-11-23 15:19:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2023-11-23 15:19:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3677 transitions. [2023-11-23 15:19:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:04,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:04,895 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:04,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:05,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:05,110 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:05,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1750898100, now seen corresponding path program 1 times [2023-11-23 15:19:05,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:05,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062812710] [2023-11-23 15:19:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:05,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:05,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062812710] [2023-11-23 15:19:05,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062812710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:05,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719862363] [2023-11-23 15:19:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:05,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:05,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:05,311 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:05,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-23 15:19:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 15:19:05,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 15:19:06,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:06,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719862363] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:06,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:06,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 7] total 16 [2023-11-23 15:19:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381455573] [2023-11-23 15:19:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:06,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:19:06,538 INFO L87 Difference]: Start difference. First operand 2293 states and 3677 transitions. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 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) [2023-11-23 15:19:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:08,659 INFO L93 Difference]: Finished difference Result 6513 states and 10378 transitions. [2023-11-23 15:19:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:19:08,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 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 370 [2023-11-23 15:19:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:08,664 INFO L225 Difference]: With dead ends: 6513 [2023-11-23 15:19:08,664 INFO L226 Difference]: Without dead ends: 4578 [2023-11-23 15:19:08,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:19:08,666 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 3299 mSDsluCounter, 4629 mSDsCounter, 0 mSdLazyCounter, 3825 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3304 SdHoareTripleChecker+Valid, 5956 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:08,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3304 Valid, 5956 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 15:19:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2023-11-23 15:19:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 4204. [2023-11-23 15:19:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4204 states, 4148 states have (on average 1.5988428158148504) internal successors, (6632), 4148 states have internal predecessors, (6632), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 15:19:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6740 transitions. [2023-11-23 15:19:08,793 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6740 transitions. Word has length 370 [2023-11-23 15:19:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:08,793 INFO L495 AbstractCegarLoop]: Abstraction has 4204 states and 6740 transitions. [2023-11-23 15:19:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 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) [2023-11-23 15:19:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6740 transitions. [2023-11-23 15:19:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:08,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:08,796 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:08,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:09,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:09,028 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:09,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1775048870, now seen corresponding path program 1 times [2023-11-23 15:19:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:09,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739678868] [2023-11-23 15:19:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:09,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739678868] [2023-11-23 15:19:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739678868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513215641] [2023-11-23 15:19:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:09,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:09,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:09,228 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:09,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-23 15:19:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:09,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 15:19:09,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 15:19:10,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513215641] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:10,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 7] total 16 [2023-11-23 15:19:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605118413] [2023-11-23 15:19:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:10,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:10,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:19:10,417 INFO L87 Difference]: Start difference. First operand 4204 states and 6740 transitions. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 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) [2023-11-23 15:19:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:12,499 INFO L93 Difference]: Finished difference Result 6444 states and 10279 transitions. [2023-11-23 15:19:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:19:12,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 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 370 [2023-11-23 15:19:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:12,503 INFO L225 Difference]: With dead ends: 6444 [2023-11-23 15:19:12,503 INFO L226 Difference]: Without dead ends: 4518 [2023-11-23 15:19:12,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-11-23 15:19:12,505 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 3361 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 4329 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 7655 SdHoareTripleChecker+Invalid, 4348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:12,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 7655 Invalid, 4348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4329 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 15:19:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2023-11-23 15:19:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4195. [2023-11-23 15:19:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 4139 states have (on average 1.5994201497946363) internal successors, (6620), 4139 states have internal predecessors, (6620), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 15:19:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 6728 transitions. [2023-11-23 15:19:12,661 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 6728 transitions. Word has length 370 [2023-11-23 15:19:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:12,661 INFO L495 AbstractCegarLoop]: Abstraction has 4195 states and 6728 transitions. [2023-11-23 15:19:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 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) [2023-11-23 15:19:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 6728 transitions. [2023-11-23 15:19:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:12,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:12,665 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:12,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-23 15:19:12,879 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:12,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1385802508, now seen corresponding path program 1 times [2023-11-23 15:19:12,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:12,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771836466] [2023-11-23 15:19:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:12,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771836466] [2023-11-23 15:19:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771836466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:13,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498200936] [2023-11-23 15:19:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:13,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:13,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:13,100 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:13,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-23 15:19:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-23 15:19:13,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 15:19:13,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:14,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498200936] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:14,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:14,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 7] total 15 [2023-11-23 15:19:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020855497] [2023-11-23 15:19:14,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:14,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:19:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:14,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:19:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:19:14,202 INFO L87 Difference]: Start difference. First operand 4195 states and 6728 transitions. Second operand has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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) [2023-11-23 15:19:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:15,295 INFO L93 Difference]: Finished difference Result 7873 states and 12630 transitions. [2023-11-23 15:19:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:19:15,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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 370 [2023-11-23 15:19:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:15,299 INFO L225 Difference]: With dead ends: 7873 [2023-11-23 15:19:15,299 INFO L226 Difference]: Without dead ends: 4045 [2023-11-23 15:19:15,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:19:15,303 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 2217 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:15,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 2725 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 15:19:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2023-11-23 15:19:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 3895. [2023-11-23 15:19:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3847 states have (on average 1.6059266961268521) internal successors, (6178), 3847 states have internal predecessors, (6178), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:19:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 6270 transitions. [2023-11-23 15:19:15,435 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 6270 transitions. Word has length 370 [2023-11-23 15:19:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:15,435 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 6270 transitions. [2023-11-23 15:19:15,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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) [2023-11-23 15:19:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 6270 transitions. [2023-11-23 15:19:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:15,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:15,472 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:15,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-23 15:19:15,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 15:19:15,685 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:15,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash -437081022, now seen corresponding path program 1 times [2023-11-23 15:19:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:15,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632715816] [2023-11-23 15:19:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632715816] [2023-11-23 15:19:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632715816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973806659] [2023-11-23 15:19:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:15,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:15,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:15,883 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:15,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-23 15:19:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:16,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-23 15:19:16,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 15:19:17,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973806659] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:19,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 11] total 23 [2023-11-23 15:19:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832423492] [2023-11-23 15:19:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 15:19:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 15:19:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-11-23 15:19:19,191 INFO L87 Difference]: Start difference. First operand 3895 states and 6270 transitions. Second operand has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 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) [2023-11-23 15:19:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:24,006 INFO L93 Difference]: Finished difference Result 22079 states and 35534 transitions. [2023-11-23 15:19:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 15:19:24,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 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 370 [2023-11-23 15:19:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:24,023 INFO L225 Difference]: With dead ends: 22079 [2023-11-23 15:19:24,024 INFO L226 Difference]: Without dead ends: 18551 [2023-11-23 15:19:24,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=1425, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 15:19:24,029 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 10856 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 5773 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10861 SdHoareTripleChecker+Valid, 9900 SdHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:24,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10861 Valid, 9900 Invalid, 5825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 5773 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 15:19:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18551 states. [2023-11-23 15:19:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18551 to 4415. [2023-11-23 15:19:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4355 states have (on average 1.6039035591274398) internal successors, (6985), 4355 states have internal predecessors, (6985), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-23 15:19:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 7101 transitions. [2023-11-23 15:19:24,251 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 7101 transitions. Word has length 370 [2023-11-23 15:19:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:24,251 INFO L495 AbstractCegarLoop]: Abstraction has 4415 states and 7101 transitions. [2023-11-23 15:19:24,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 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) [2023-11-23 15:19:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 7101 transitions. [2023-11-23 15:19:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:24,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:24,255 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:24,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-23 15:19:24,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-23 15:19:24,469 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:24,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1884720896, now seen corresponding path program 1 times [2023-11-23 15:19:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476631325] [2023-11-23 15:19:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476631325] [2023-11-23 15:19:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476631325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553005123] [2023-11-23 15:19:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:24,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:24,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:24,685 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:24,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-23 15:19:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 15:19:25,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 15:19:25,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:25,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553005123] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:25,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:25,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 8] total 14 [2023-11-23 15:19:25,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914244047] [2023-11-23 15:19:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:25,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:19:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:19:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:19:25,805 INFO L87 Difference]: Start difference. First operand 4415 states and 7101 transitions. Second operand has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-23 15:19:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:27,139 INFO L93 Difference]: Finished difference Result 11247 states and 18078 transitions. [2023-11-23 15:19:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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 370 [2023-11-23 15:19:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:27,147 INFO L225 Difference]: With dead ends: 11247 [2023-11-23 15:19:27,148 INFO L226 Difference]: Without dead ends: 7703 [2023-11-23 15:19:27,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:19:27,152 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 2766 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:27,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2771 Valid, 3368 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2327 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 15:19:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7703 states. [2023-11-23 15:19:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7703 to 4833. [2023-11-23 15:19:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4833 states, 4753 states have (on average 1.5907847675152536) internal successors, (7561), 4753 states have internal predecessors, (7561), 78 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-23 15:19:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 7717 transitions. [2023-11-23 15:19:27,356 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 7717 transitions. Word has length 370 [2023-11-23 15:19:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:27,357 INFO L495 AbstractCegarLoop]: Abstraction has 4833 states and 7717 transitions. [2023-11-23 15:19:27,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-23 15:19:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 7717 transitions. [2023-11-23 15:19:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:27,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:27,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:27,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:27,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:27,576 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:27,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash -501788610, now seen corresponding path program 1 times [2023-11-23 15:19:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:27,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277468812] [2023-11-23 15:19:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:27,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:27,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277468812] [2023-11-23 15:19:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277468812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314590273] [2023-11-23 15:19:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:27,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:27,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:27,778 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:27,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-23 15:19:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 15:19:28,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 15:19:28,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 15:19:29,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314590273] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:29,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:29,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:19:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530566798] [2023-11-23 15:19:29,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:29,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:29,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:19:29,390 INFO L87 Difference]: Start difference. First operand 4833 states and 7717 transitions. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2023-11-23 15:19:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:32,852 INFO L93 Difference]: Finished difference Result 24596 states and 39275 transitions. [2023-11-23 15:19:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:19:32,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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 370 [2023-11-23 15:19:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:32,870 INFO L225 Difference]: With dead ends: 24596 [2023-11-23 15:19:32,870 INFO L226 Difference]: Without dead ends: 20499 [2023-11-23 15:19:32,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2023-11-23 15:19:32,877 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 9261 mSDsluCounter, 6850 mSDsCounter, 0 mSdLazyCounter, 4809 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9266 SdHoareTripleChecker+Valid, 8374 SdHoareTripleChecker+Invalid, 4859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:32,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9266 Valid, 8374 Invalid, 4859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4809 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 15:19:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20499 states. [2023-11-23 15:19:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20499 to 5227. [2023-11-23 15:19:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5125 states have (on average 1.5804878048780489) internal successors, (8100), 5125 states have internal predecessors, (8100), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 15:19:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 8300 transitions. [2023-11-23 15:19:33,201 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 8300 transitions. Word has length 370 [2023-11-23 15:19:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:33,202 INFO L495 AbstractCegarLoop]: Abstraction has 5227 states and 8300 transitions. [2023-11-23 15:19:33,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2023-11-23 15:19:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 8300 transitions. [2023-11-23 15:19:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-23 15:19:33,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:33,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 15:19:33,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:33,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:33,420 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:33,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash -994868572, now seen corresponding path program 1 times [2023-11-23 15:19:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:33,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481927543] [2023-11-23 15:19:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:19:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:19:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-23 15:19:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-23 15:19:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-23 15:19:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481927543] [2023-11-23 15:19:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481927543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341954153] [2023-11-23 15:19:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:33,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:33,615 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:33,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-23 15:19:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:34,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 15:19:34,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 15:19:34,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 15:19:34,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341954153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:34,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:34,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 11 [2023-11-23 15:19:34,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956434567] [2023-11-23 15:19:34,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:34,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 15:19:34,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 15:19:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:19:34,225 INFO L87 Difference]: Start difference. First operand 5227 states and 8300 transitions. Second operand has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 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) [2023-11-23 15:19:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:34,611 INFO L93 Difference]: Finished difference Result 10437 states and 16576 transitions. [2023-11-23 15:19:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:34,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 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 370 [2023-11-23 15:19:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:34,616 INFO L225 Difference]: With dead ends: 10437 [2023-11-23 15:19:34,617 INFO L226 Difference]: Without dead ends: 5234 [2023-11-23 15:19:34,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:19:34,622 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 1436 mSDsluCounter, 6834 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 8212 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:34,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 8212 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:19:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2023-11-23 15:19:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 5231. [2023-11-23 15:19:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5129 states have (on average 1.5804250341197115) internal successors, (8106), 5129 states have internal predecessors, (8106), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 15:19:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 8306 transitions. [2023-11-23 15:19:34,858 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 8306 transitions. Word has length 370 [2023-11-23 15:19:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:34,858 INFO L495 AbstractCegarLoop]: Abstraction has 5231 states and 8306 transitions. [2023-11-23 15:19:34,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.0) internal successors, (352), 11 states have internal predecessors, (352), 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) [2023-11-23 15:19:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 8306 transitions. [2023-11-23 15:19:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-23 15:19:34,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:34,863 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2023-11-23 15:19:34,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:35,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:35,077 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:35,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1826539537, now seen corresponding path program 2 times [2023-11-23 15:19:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:35,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776741326] [2023-11-23 15:19:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 15:19:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776741326] [2023-11-23 15:19:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776741326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:35,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:35,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:19:35,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881563188] [2023-11-23 15:19:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:35,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:19:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:19:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:19:35,514 INFO L87 Difference]: Start difference. First operand 5231 states and 8306 transitions. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2023-11-23 15:19:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:36,794 INFO L93 Difference]: Finished difference Result 9114 states and 14495 transitions. [2023-11-23 15:19:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 15:19:36,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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 [2023-11-23 15:19:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:36,800 INFO L225 Difference]: With dead ends: 9114 [2023-11-23 15:19:36,800 INFO L226 Difference]: Without dead ends: 5249 [2023-11-23 15:19:36,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:19:36,805 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1321 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:36,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 2536 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 15:19:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2023-11-23 15:19:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 5243. [2023-11-23 15:19:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5141 states have (on average 1.5790702198015951) internal successors, (8118), 5141 states have internal predecessors, (8118), 100 states have call successors, (100), 1 states have call predecessors, (100), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-23 15:19:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 8318 transitions. [2023-11-23 15:19:37,046 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 8318 transitions. Word has length 373 [2023-11-23 15:19:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:37,047 INFO L495 AbstractCegarLoop]: Abstraction has 5243 states and 8318 transitions. [2023-11-23 15:19:37,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2023-11-23 15:19:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 8318 transitions. [2023-11-23 15:19:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-23 15:19:37,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:37,051 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2023-11-23 15:19:37,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-23 15:19:37,051 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:37,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash 776425957, now seen corresponding path program 1 times [2023-11-23 15:19:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:37,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141949300] [2023-11-23 15:19:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 15:19:38,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:38,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141949300] [2023-11-23 15:19:38,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141949300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:38,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:38,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 15:19:38,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258535240] [2023-11-23 15:19:38,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:38,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:19:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:19:38,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:19:38,090 INFO L87 Difference]: Start difference. First operand 5243 states and 8318 transitions. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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) [2023-11-23 15:19:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:38,817 INFO L93 Difference]: Finished difference Result 13754 states and 21810 transitions. [2023-11-23 15:19:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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 374 [2023-11-23 15:19:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:38,825 INFO L225 Difference]: With dead ends: 13754 [2023-11-23 15:19:38,826 INFO L226 Difference]: Without dead ends: 9877 [2023-11-23 15:19:38,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:19:38,828 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 4555 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 5674 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:38,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 5674 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:19:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2023-11-23 15:19:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 6048. [2023-11-23 15:19:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6048 states, 5901 states have (on average 1.5651584477207252) internal successors, (9236), 5901 states have internal predecessors, (9236), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6048 states to 6048 states and 9526 transitions. [2023-11-23 15:19:39,150 INFO L78 Accepts]: Start accepts. Automaton has 6048 states and 9526 transitions. Word has length 374 [2023-11-23 15:19:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:39,150 INFO L495 AbstractCegarLoop]: Abstraction has 6048 states and 9526 transitions. [2023-11-23 15:19:39,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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) [2023-11-23 15:19:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6048 states and 9526 transitions. [2023-11-23 15:19:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-11-23 15:19:39,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:39,162 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:39,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-23 15:19:39,162 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:39,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1475206462, now seen corresponding path program 1 times [2023-11-23 15:19:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990587008] [2023-11-23 15:19:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-23 15:19:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-23 15:19:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-23 15:19:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:19:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-23 15:19:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:19:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990587008] [2023-11-23 15:19:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990587008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:40,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:40,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 15:19:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478290250] [2023-11-23 15:19:40,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:40,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:19:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:19:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:19:40,303 INFO L87 Difference]: Start difference. First operand 6048 states and 9526 transitions. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:40,850 INFO L93 Difference]: Finished difference Result 13810 states and 21889 transitions. [2023-11-23 15:19:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 15:19:40,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 759 [2023-11-23 15:19:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:40,860 INFO L225 Difference]: With dead ends: 13810 [2023-11-23 15:19:40,860 INFO L226 Difference]: Without dead ends: 9933 [2023-11-23 15:19:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:19:40,866 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 830 mSDsluCounter, 2997 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:40,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 4608 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9933 states. [2023-11-23 15:19:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9933 to 6060. [2023-11-23 15:19:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 5913 states have (on average 1.5640115000845594) internal successors, (9248), 5913 states have internal predecessors, (9248), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 9538 transitions. [2023-11-23 15:19:41,237 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 9538 transitions. Word has length 759 [2023-11-23 15:19:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:41,237 INFO L495 AbstractCegarLoop]: Abstraction has 6060 states and 9538 transitions. [2023-11-23 15:19:41,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 9538 transitions. [2023-11-23 15:19:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-11-23 15:19:41,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:41,249 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-23 15:19:41,249 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:41,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -651170756, now seen corresponding path program 1 times [2023-11-23 15:19:41,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:41,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471595925] [2023-11-23 15:19:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-23 15:19:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-23 15:19:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-23 15:19:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:19:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-23 15:19:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:19:42,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471595925] [2023-11-23 15:19:42,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471595925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:42,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:42,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:19:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886975711] [2023-11-23 15:19:42,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:19:42,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:19:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:19:42,081 INFO L87 Difference]: Start difference. First operand 6060 states and 9538 transitions. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:43,085 INFO L93 Difference]: Finished difference Result 9949 states and 15727 transitions. [2023-11-23 15:19:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:19:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 759 [2023-11-23 15:19:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:43,090 INFO L225 Difference]: With dead ends: 9949 [2023-11-23 15:19:43,090 INFO L226 Difference]: Without dead ends: 6060 [2023-11-23 15:19:43,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:19:43,093 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 2343 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:43,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2343 Valid, 1668 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 15:19:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2023-11-23 15:19:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6060. [2023-11-23 15:19:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 5913 states have (on average 1.562996786741079) internal successors, (9242), 5913 states have internal predecessors, (9242), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 9532 transitions. [2023-11-23 15:19:43,406 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 9532 transitions. Word has length 759 [2023-11-23 15:19:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:43,406 INFO L495 AbstractCegarLoop]: Abstraction has 6060 states and 9532 transitions. [2023-11-23 15:19:43,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 9532 transitions. [2023-11-23 15:19:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-11-23 15:19:43,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:43,417 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:43,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-23 15:19:43,418 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:43,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash 445693397, now seen corresponding path program 1 times [2023-11-23 15:19:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790202811] [2023-11-23 15:19:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2023-11-23 15:19:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-23 15:19:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-23 15:19:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:19:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-23 15:19:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:19:44,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:44,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790202811] [2023-11-23 15:19:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790202811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:44,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:44,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:19:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846669041] [2023-11-23 15:19:44,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:44,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:19:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:19:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:19:44,072 INFO L87 Difference]: Start difference. First operand 6060 states and 9532 transitions. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:44,397 INFO L93 Difference]: Finished difference Result 9955 states and 15727 transitions. [2023-11-23 15:19:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:19:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 760 [2023-11-23 15:19:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:44,403 INFO L225 Difference]: With dead ends: 9955 [2023-11-23 15:19:44,403 INFO L226 Difference]: Without dead ends: 6066 [2023-11-23 15:19:44,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:19:44,407 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 0 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:44,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2775 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:19:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2023-11-23 15:19:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 6066. [2023-11-23 15:19:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 5919 states have (on average 1.5624260854874135) internal successors, (9248), 5919 states have internal predecessors, (9248), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9538 transitions. [2023-11-23 15:19:44,726 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9538 transitions. Word has length 760 [2023-11-23 15:19:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:44,727 INFO L495 AbstractCegarLoop]: Abstraction has 6066 states and 9538 transitions. [2023-11-23 15:19:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9538 transitions. [2023-11-23 15:19:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-11-23 15:19:44,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:44,738 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:44,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-23 15:19:44,738 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -428049230, now seen corresponding path program 1 times [2023-11-23 15:19:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:44,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325164415] [2023-11-23 15:19:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2023-11-23 15:19:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:19:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:19:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-23 15:19:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:19:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:19:45,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:45,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325164415] [2023-11-23 15:19:45,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325164415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:45,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952364959] [2023-11-23 15:19:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:45,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:45,505 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:45,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-23 15:19:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:46,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 15:19:46,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 15:19:47,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:19:47,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952364959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:47,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:19:47,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:19:47,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674966081] [2023-11-23 15:19:47,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:47,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:19:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:19:47,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:19:47,176 INFO L87 Difference]: Start difference. First operand 6066 states and 9538 transitions. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:48,122 INFO L93 Difference]: Finished difference Result 9961 states and 15727 transitions. [2023-11-23 15:19:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:19:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 761 [2023-11-23 15:19:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:48,127 INFO L225 Difference]: With dead ends: 9961 [2023-11-23 15:19:48,127 INFO L226 Difference]: Without dead ends: 6066 [2023-11-23 15:19:48,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:48,129 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1049 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:48,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1668 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 15:19:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2023-11-23 15:19:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 6066. [2023-11-23 15:19:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 5919 states have (on average 1.5614124007433687) internal successors, (9242), 5919 states have internal predecessors, (9242), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9532 transitions. [2023-11-23 15:19:48,445 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9532 transitions. Word has length 761 [2023-11-23 15:19:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:48,446 INFO L495 AbstractCegarLoop]: Abstraction has 6066 states and 9532 transitions. [2023-11-23 15:19:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9532 transitions. [2023-11-23 15:19:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-11-23 15:19:48,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:48,456 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:48,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:48,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-23 15:19:48,672 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:48,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1301671564, now seen corresponding path program 1 times [2023-11-23 15:19:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:48,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020360216] [2023-11-23 15:19:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2023-11-23 15:19:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:19:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:19:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-23 15:19:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:19:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:19:49,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:49,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020360216] [2023-11-23 15:19:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020360216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:49,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319998310] [2023-11-23 15:19:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:49,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:49,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:49,588 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:49,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-23 15:19:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:19:50,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 15:19:50,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 15:19:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319998310] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:19:50,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622171382] [2023-11-23 15:19:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:19:50,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:19:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:50,522 INFO L87 Difference]: Start difference. First operand 6066 states and 9532 transitions. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:50,894 INFO L93 Difference]: Finished difference Result 9967 states and 15727 transitions. [2023-11-23 15:19:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:19:50,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 761 [2023-11-23 15:19:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:50,900 INFO L225 Difference]: With dead ends: 9967 [2023-11-23 15:19:50,900 INFO L226 Difference]: Without dead ends: 6072 [2023-11-23 15:19:50,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1544 GetRequests, 1539 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:50,914 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:50,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:19:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2023-11-23 15:19:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 6072. [2023-11-23 15:19:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 5925 states have (on average 1.56084388185654) internal successors, (9248), 5925 states have internal predecessors, (9248), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 9538 transitions. [2023-11-23 15:19:51,280 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 9538 transitions. Word has length 761 [2023-11-23 15:19:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:51,281 INFO L495 AbstractCegarLoop]: Abstraction has 6072 states and 9538 transitions. [2023-11-23 15:19:51,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 9538 transitions. [2023-11-23 15:19:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-11-23 15:19:51,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:51,291 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:51,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-23 15:19:51,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-23 15:19:51,508 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:51,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash 72559317, now seen corresponding path program 1 times [2023-11-23 15:19:51,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:51,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871713726] [2023-11-23 15:19:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-11-23 15:19:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2023-11-23 15:19:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2023-11-23 15:19:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-23 15:19:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:19:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 15:19:52,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871713726] [2023-11-23 15:19:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871713726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547815672] [2023-11-23 15:19:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:52,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:52,292 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:52,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-23 15:19:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:53,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 4055 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:19:53,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 15:19:53,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-23 15:19:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547815672] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:53,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:53,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:19:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347289682] [2023-11-23 15:19:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:19:53,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:19:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:53,218 INFO L87 Difference]: Start difference. First operand 6072 states and 9538 transitions. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:53,622 INFO L93 Difference]: Finished difference Result 9979 states and 15739 transitions. [2023-11-23 15:19:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:19:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 762 [2023-11-23 15:19:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:53,629 INFO L225 Difference]: With dead ends: 9979 [2023-11-23 15:19:53,629 INFO L226 Difference]: Without dead ends: 6078 [2023-11-23 15:19:53,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 1541 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:53,633 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:53,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:19:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2023-11-23 15:19:53,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 6078. [2023-11-23 15:19:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6078 states, 5931 states have (on average 1.560276513235542) internal successors, (9254), 5931 states have internal predecessors, (9254), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 9544 transitions. [2023-11-23 15:19:53,989 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 9544 transitions. Word has length 762 [2023-11-23 15:19:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:53,989 INFO L495 AbstractCegarLoop]: Abstraction has 6078 states and 9544 transitions. [2023-11-23 15:19:53,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 9544 transitions. [2023-11-23 15:19:53,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-11-23 15:19:53,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:53,999 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:54,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:54,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-23 15:19:54,216 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:54,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1178498967, now seen corresponding path program 1 times [2023-11-23 15:19:54,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381347670] [2023-11-23 15:19:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:54,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2023-11-23 15:19:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2023-11-23 15:19:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2023-11-23 15:19:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:19:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-23 15:19:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-23 15:19:54,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381347670] [2023-11-23 15:19:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381347670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:54,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91668342] [2023-11-23 15:19:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:54,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:54,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:54,998 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:55,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-23 15:19:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:55,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 4062 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:19:55,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 15:19:55,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 15:19:55,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91668342] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:55,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:55,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:19:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467592933] [2023-11-23 15:19:55,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:55,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:19:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:19:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:55,962 INFO L87 Difference]: Start difference. First operand 6078 states and 9544 transitions. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:56,308 INFO L93 Difference]: Finished difference Result 9991 states and 15751 transitions. [2023-11-23 15:19:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:19:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 763 [2023-11-23 15:19:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:56,315 INFO L225 Difference]: With dead ends: 9991 [2023-11-23 15:19:56,315 INFO L226 Difference]: Without dead ends: 6084 [2023-11-23 15:19:56,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1543 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:56,319 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:56,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:19:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2023-11-23 15:19:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6084. [2023-11-23 15:19:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 5937 states have (on average 1.5597102913929595) internal successors, (9260), 5937 states have internal predecessors, (9260), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9550 transitions. [2023-11-23 15:19:56,806 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9550 transitions. Word has length 763 [2023-11-23 15:19:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:56,807 INFO L495 AbstractCegarLoop]: Abstraction has 6084 states and 9550 transitions. [2023-11-23 15:19:56,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9550 transitions. [2023-11-23 15:19:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-11-23 15:19:56,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:56,819 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:56,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:57,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-23 15:19:57,033 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:57,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2050467979, now seen corresponding path program 1 times [2023-11-23 15:19:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134331627] [2023-11-23 15:19:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:19:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:19:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:19:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2023-11-23 15:19:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-11-23 15:19:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-23 15:19:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-23 15:19:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:19:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 15:19:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:57,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134331627] [2023-11-23 15:19:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134331627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:57,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661527200] [2023-11-23 15:19:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:57,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:57,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:57,733 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:19:57,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-23 15:19:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:19:58,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-23 15:19:58,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-23 15:19:58,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661527200] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:58,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:19:58,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:19:58,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247463434] [2023-11-23 15:19:58,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:58,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:19:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:58,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:19:58,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:58,683 INFO L87 Difference]: Start difference. First operand 6084 states and 9550 transitions. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:59,038 INFO L93 Difference]: Finished difference Result 10003 states and 15763 transitions. [2023-11-23 15:19:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:19:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 764 [2023-11-23 15:19:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:59,045 INFO L225 Difference]: With dead ends: 10003 [2023-11-23 15:19:59,045 INFO L226 Difference]: Without dead ends: 6090 [2023-11-23 15:19:59,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1545 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:59,048 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:59,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:19:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6090 states. [2023-11-23 15:19:59,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6090 to 6090. [2023-11-23 15:19:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 5943 states have (on average 1.5591452128554601) internal successors, (9266), 5943 states have internal predecessors, (9266), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:19:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 9556 transitions. [2023-11-23 15:19:59,432 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 9556 transitions. Word has length 764 [2023-11-23 15:19:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:59,433 INFO L495 AbstractCegarLoop]: Abstraction has 6090 states and 9556 transitions. [2023-11-23 15:19:59,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:19:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 9556 transitions. [2023-11-23 15:19:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-11-23 15:19:59,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:59,442 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:19:59,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-23 15:19:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:59,663 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:59,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash 252844281, now seen corresponding path program 1 times [2023-11-23 15:19:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443169663] [2023-11-23 15:19:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2023-11-23 15:20:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-23 15:20:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-11-23 15:20:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:20:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-23 15:20:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-23 15:20:00,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:00,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443169663] [2023-11-23 15:20:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443169663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:00,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876453678] [2023-11-23 15:20:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:00,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:00,315 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:00,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-23 15:20:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:01,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 4076 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:01,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 15:20:01,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 15:20:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876453678] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:01,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:01,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113163119] [2023-11-23 15:20:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:01,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:01,265 INFO L87 Difference]: Start difference. First operand 6090 states and 9556 transitions. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:01,680 INFO L93 Difference]: Finished difference Result 10015 states and 15775 transitions. [2023-11-23 15:20:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 765 [2023-11-23 15:20:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:01,686 INFO L225 Difference]: With dead ends: 10015 [2023-11-23 15:20:01,686 INFO L226 Difference]: Without dead ends: 6096 [2023-11-23 15:20:01,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1547 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:01,693 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:01,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2023-11-23 15:20:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 6096. [2023-11-23 15:20:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6096 states, 5949 states have (on average 1.558581274163725) internal successors, (9272), 5949 states have internal predecessors, (9272), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6096 states to 6096 states and 9562 transitions. [2023-11-23 15:20:02,056 INFO L78 Accepts]: Start accepts. Automaton has 6096 states and 9562 transitions. Word has length 765 [2023-11-23 15:20:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:02,058 INFO L495 AbstractCegarLoop]: Abstraction has 6096 states and 9562 transitions. [2023-11-23 15:20:02,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6096 states and 9562 transitions. [2023-11-23 15:20:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-11-23 15:20:02,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:02,070 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:02,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:02,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-23 15:20:02,285 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:02,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1953533995, now seen corresponding path program 1 times [2023-11-23 15:20:02,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911508227] [2023-11-23 15:20:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2023-11-23 15:20:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2023-11-23 15:20:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-23 15:20:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:20:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:20:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 15:20:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911508227] [2023-11-23 15:20:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911508227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529561100] [2023-11-23 15:20:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:02,977 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:02,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-23 15:20:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:03,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:03,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-23 15:20:03,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-23 15:20:03,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529561100] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:03,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:03,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292729550] [2023-11-23 15:20:03,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:03,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:03,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:03,957 INFO L87 Difference]: Start difference. First operand 6096 states and 9562 transitions. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:04,366 INFO L93 Difference]: Finished difference Result 10027 states and 15787 transitions. [2023-11-23 15:20:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 766 [2023-11-23 15:20:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:04,372 INFO L225 Difference]: With dead ends: 10027 [2023-11-23 15:20:04,372 INFO L226 Difference]: Without dead ends: 6102 [2023-11-23 15:20:04,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1549 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:04,375 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:04,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2023-11-23 15:20:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 6102. [2023-11-23 15:20:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 5955 states have (on average 1.5580184718723762) internal successors, (9278), 5955 states have internal predecessors, (9278), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 9568 transitions. [2023-11-23 15:20:04,731 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 9568 transitions. Word has length 766 [2023-11-23 15:20:04,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:04,731 INFO L495 AbstractCegarLoop]: Abstraction has 6102 states and 9568 transitions. [2023-11-23 15:20:04,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 9568 transitions. [2023-11-23 15:20:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-11-23 15:20:04,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:04,762 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:04,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:04,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:04,977 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:04,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1406888583, now seen corresponding path program 1 times [2023-11-23 15:20:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:04,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461994656] [2023-11-23 15:20:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:04,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2023-11-23 15:20:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2023-11-23 15:20:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:20:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-11-23 15:20:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-11-23 15:20:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-23 15:20:05,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461994656] [2023-11-23 15:20:05,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461994656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130833482] [2023-11-23 15:20:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:05,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:05,962 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:05,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-23 15:20:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:06,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 4090 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:06,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 15:20:06,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 15:20:06,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130833482] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:06,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:06,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:06,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878899636] [2023-11-23 15:20:06,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:06,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:06,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:06,966 INFO L87 Difference]: Start difference. First operand 6102 states and 9568 transitions. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:07,385 INFO L93 Difference]: Finished difference Result 10039 states and 15799 transitions. [2023-11-23 15:20:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:07,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 767 [2023-11-23 15:20:07,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:07,391 INFO L225 Difference]: With dead ends: 10039 [2023-11-23 15:20:07,391 INFO L226 Difference]: Without dead ends: 6108 [2023-11-23 15:20:07,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1556 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:07,395 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:07,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6108 states. [2023-11-23 15:20:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6108 to 6108. [2023-11-23 15:20:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6108 states, 5961 states have (on average 1.5574568025499078) internal successors, (9284), 5961 states have internal predecessors, (9284), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6108 states to 6108 states and 9574 transitions. [2023-11-23 15:20:07,763 INFO L78 Accepts]: Start accepts. Automaton has 6108 states and 9574 transitions. Word has length 767 [2023-11-23 15:20:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:07,763 INFO L495 AbstractCegarLoop]: Abstraction has 6108 states and 9574 transitions. [2023-11-23 15:20:07,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6108 states and 9574 transitions. [2023-11-23 15:20:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-11-23 15:20:07,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:07,772 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:07,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-23 15:20:07,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-23 15:20:07,992 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:07,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1945139816, now seen corresponding path program 1 times [2023-11-23 15:20:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:07,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710253520] [2023-11-23 15:20:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2023-11-23 15:20:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-23 15:20:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-23 15:20:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2023-11-23 15:20:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:20:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 15:20:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710253520] [2023-11-23 15:20:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710253520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012804053] [2023-11-23 15:20:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:08,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:08,676 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:08,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-23 15:20:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 4097 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:09,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-23 15:20:09,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 15:20:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012804053] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:09,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:09,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964560352] [2023-11-23 15:20:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:09,701 INFO L87 Difference]: Start difference. First operand 6108 states and 9574 transitions. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:10,080 INFO L93 Difference]: Finished difference Result 10051 states and 15811 transitions. [2023-11-23 15:20:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 768 [2023-11-23 15:20:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:10,086 INFO L225 Difference]: With dead ends: 10051 [2023-11-23 15:20:10,086 INFO L226 Difference]: Without dead ends: 6114 [2023-11-23 15:20:10,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1553 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:10,089 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:10,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2023-11-23 15:20:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 6114. [2023-11-23 15:20:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 5967 states have (on average 1.5568962627786158) internal successors, (9290), 5967 states have internal predecessors, (9290), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 9580 transitions. [2023-11-23 15:20:10,456 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 9580 transitions. Word has length 768 [2023-11-23 15:20:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:10,456 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 9580 transitions. [2023-11-23 15:20:10,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 9580 transitions. [2023-11-23 15:20:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-11-23 15:20:10,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:10,465 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:10,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-23 15:20:10,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-23 15:20:10,670 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:10,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2012878146, now seen corresponding path program 1 times [2023-11-23 15:20:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:10,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392775919] [2023-11-23 15:20:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-23 15:20:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-23 15:20:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-23 15:20:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:20:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-23 15:20:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 15:20:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392775919] [2023-11-23 15:20:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392775919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499209703] [2023-11-23 15:20:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:11,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:11,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:11,449 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:11,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-23 15:20:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:12,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 4104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:12,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-23 15:20:12,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 15:20:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499209703] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:12,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871316994] [2023-11-23 15:20:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:12,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:12,389 INFO L87 Difference]: Start difference. First operand 6114 states and 9580 transitions. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:12,777 INFO L93 Difference]: Finished difference Result 10063 states and 15823 transitions. [2023-11-23 15:20:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 769 [2023-11-23 15:20:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:12,783 INFO L225 Difference]: With dead ends: 10063 [2023-11-23 15:20:12,783 INFO L226 Difference]: Without dead ends: 6120 [2023-11-23 15:20:12,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1555 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:12,786 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:12,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2023-11-23 15:20:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 6120. [2023-11-23 15:20:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6120 states, 5973 states have (on average 1.5563368491545286) internal successors, (9296), 5973 states have internal predecessors, (9296), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6120 states to 6120 states and 9586 transitions. [2023-11-23 15:20:13,160 INFO L78 Accepts]: Start accepts. Automaton has 6120 states and 9586 transitions. Word has length 769 [2023-11-23 15:20:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:13,163 INFO L495 AbstractCegarLoop]: Abstraction has 6120 states and 9586 transitions. [2023-11-23 15:20:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6120 states and 9586 transitions. [2023-11-23 15:20:13,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-11-23 15:20:13,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:13,172 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:13,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:13,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-23 15:20:13,389 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:13,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1643638425, now seen corresponding path program 1 times [2023-11-23 15:20:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624346850] [2023-11-23 15:20:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2023-11-23 15:20:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-11-23 15:20:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-23 15:20:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-23 15:20:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-23 15:20:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 15:20:14,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624346850] [2023-11-23 15:20:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624346850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664947914] [2023-11-23 15:20:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:14,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:14,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:14,246 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:14,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-23 15:20:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:15,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 4111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:15,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-23 15:20:15,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 15:20:15,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664947914] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:15,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:15,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099254591] [2023-11-23 15:20:15,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:15,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:15,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:15,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:15,156 INFO L87 Difference]: Start difference. First operand 6120 states and 9586 transitions. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:15,550 INFO L93 Difference]: Finished difference Result 10075 states and 15835 transitions. [2023-11-23 15:20:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 770 [2023-11-23 15:20:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:15,557 INFO L225 Difference]: With dead ends: 10075 [2023-11-23 15:20:15,557 INFO L226 Difference]: Without dead ends: 6126 [2023-11-23 15:20:15,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1562 GetRequests, 1557 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:15,561 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:15,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2023-11-23 15:20:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6126. [2023-11-23 15:20:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6126 states, 5979 states have (on average 1.5557785582873391) internal successors, (9302), 5979 states have internal predecessors, (9302), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6126 states to 6126 states and 9592 transitions. [2023-11-23 15:20:15,946 INFO L78 Accepts]: Start accepts. Automaton has 6126 states and 9592 transitions. Word has length 770 [2023-11-23 15:20:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:15,947 INFO L495 AbstractCegarLoop]: Abstraction has 6126 states and 9592 transitions. [2023-11-23 15:20:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6126 states and 9592 transitions. [2023-11-23 15:20:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-23 15:20:15,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:15,956 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:15,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-23 15:20:16,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-23 15:20:16,174 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:16,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1325529745, now seen corresponding path program 1 times [2023-11-23 15:20:16,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:16,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360007921] [2023-11-23 15:20:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:16,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-11-23 15:20:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-23 15:20:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-23 15:20:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-23 15:20:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2023-11-23 15:20:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 15:20:16,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:16,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360007921] [2023-11-23 15:20:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360007921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:16,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688270756] [2023-11-23 15:20:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:16,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:16,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:16,868 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:16,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-23 15:20:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:17,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 4118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:17,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 15:20:17,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 15:20:17,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688270756] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:17,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997550030] [2023-11-23 15:20:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:17,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:17,916 INFO L87 Difference]: Start difference. First operand 6126 states and 9592 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:18,319 INFO L93 Difference]: Finished difference Result 10087 states and 15847 transitions. [2023-11-23 15:20:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 771 [2023-11-23 15:20:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:18,325 INFO L225 Difference]: With dead ends: 10087 [2023-11-23 15:20:18,325 INFO L226 Difference]: Without dead ends: 6132 [2023-11-23 15:20:18,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1559 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:18,329 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:18,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2023-11-23 15:20:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 6132. [2023-11-23 15:20:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 5985 states have (on average 1.5552213868003342) internal successors, (9308), 5985 states have internal predecessors, (9308), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 9598 transitions. [2023-11-23 15:20:18,720 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 9598 transitions. Word has length 771 [2023-11-23 15:20:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:18,721 INFO L495 AbstractCegarLoop]: Abstraction has 6132 states and 9598 transitions. [2023-11-23 15:20:18,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 9598 transitions. [2023-11-23 15:20:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-23 15:20:18,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:18,729 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:18,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:18,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-23 15:20:18,939 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:18,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:18,940 INFO L85 PathProgramCache]: Analyzing trace with hash 444351933, now seen corresponding path program 1 times [2023-11-23 15:20:18,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:18,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561148471] [2023-11-23 15:20:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2023-11-23 15:20:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-23 15:20:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:20:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:20:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-23 15:20:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 15:20:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561148471] [2023-11-23 15:20:19,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561148471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483897156] [2023-11-23 15:20:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:19,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:19,675 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:19,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-23 15:20:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:20,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 4125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:20:20,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 15:20:20,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 15:20:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483897156] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:20,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284705331] [2023-11-23 15:20:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:20,778 INFO L87 Difference]: Start difference. First operand 6132 states and 9598 transitions. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:21,191 INFO L93 Difference]: Finished difference Result 10099 states and 15859 transitions. [2023-11-23 15:20:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:21,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 772 [2023-11-23 15:20:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:21,199 INFO L225 Difference]: With dead ends: 10099 [2023-11-23 15:20:21,200 INFO L226 Difference]: Without dead ends: 6138 [2023-11-23 15:20:21,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1561 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:21,204 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:21,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2023-11-23 15:20:21,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 6138. [2023-11-23 15:20:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 5991 states have (on average 1.554665331330329) internal successors, (9314), 5991 states have internal predecessors, (9314), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 9604 transitions. [2023-11-23 15:20:21,615 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 9604 transitions. Word has length 772 [2023-11-23 15:20:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:21,615 INFO L495 AbstractCegarLoop]: Abstraction has 6138 states and 9604 transitions. [2023-11-23 15:20:21,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 9604 transitions. [2023-11-23 15:20:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-23 15:20:21,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:21,627 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:21,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-23 15:20:21,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-23 15:20:21,833 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:21,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1092711290, now seen corresponding path program 1 times [2023-11-23 15:20:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:21,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122059581] [2023-11-23 15:20:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:21,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2023-11-23 15:20:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-23 15:20:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-23 15:20:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:20:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:20:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 15:20:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122059581] [2023-11-23 15:20:22,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122059581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:22,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657246301] [2023-11-23 15:20:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:22,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:22,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:22,535 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:22,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-23 15:20:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:23,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 4132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:23,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 15:20:23,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 15:20:23,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657246301] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:23,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683289907] [2023-11-23 15:20:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:23,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:23,586 INFO L87 Difference]: Start difference. First operand 6138 states and 9604 transitions. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:24,000 INFO L93 Difference]: Finished difference Result 10111 states and 15871 transitions. [2023-11-23 15:20:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 773 [2023-11-23 15:20:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:24,007 INFO L225 Difference]: With dead ends: 10111 [2023-11-23 15:20:24,007 INFO L226 Difference]: Without dead ends: 6144 [2023-11-23 15:20:24,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1563 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:24,011 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:24,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2773 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2023-11-23 15:20:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6144. [2023-11-23 15:20:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 5997 states have (on average 1.554110388527597) internal successors, (9320), 5997 states have internal predecessors, (9320), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 9610 transitions. [2023-11-23 15:20:24,416 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 9610 transitions. Word has length 773 [2023-11-23 15:20:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:24,416 INFO L495 AbstractCegarLoop]: Abstraction has 6144 states and 9610 transitions. [2023-11-23 15:20:24,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:24,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 9610 transitions. [2023-11-23 15:20:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-23 15:20:24,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:24,425 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:24,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-11-23 15:20:24,640 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:24,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1082136332, now seen corresponding path program 1 times [2023-11-23 15:20:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:24,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2862079] [2023-11-23 15:20:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-23 15:20:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-23 15:20:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:20:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-23 15:20:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2023-11-23 15:20:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 15:20:25,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:25,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2862079] [2023-11-23 15:20:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2862079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612789912] [2023-11-23 15:20:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:25,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:25,396 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:25,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-23 15:20:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 4139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:20:26,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 15:20:26,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 15:20:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612789912] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:20:26,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:20:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327967210] [2023-11-23 15:20:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:26,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:20:26,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:26,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:20:26,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:26,442 INFO L87 Difference]: Start difference. First operand 6144 states and 9610 transitions. Second operand has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:26,879 INFO L93 Difference]: Finished difference Result 10123 states and 15883 transitions. [2023-11-23 15:20:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:20:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 774 [2023-11-23 15:20:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:26,886 INFO L225 Difference]: With dead ends: 10123 [2023-11-23 15:20:26,887 INFO L226 Difference]: Without dead ends: 6150 [2023-11-23 15:20:26,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1565 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:26,892 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 0 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:26,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2774 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2023-11-23 15:20:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 6150. [2023-11-23 15:20:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6150 states, 6003 states have (on average 1.5535565550558055) internal successors, (9326), 6003 states have internal predecessors, (9326), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 9616 transitions. [2023-11-23 15:20:27,311 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 9616 transitions. Word has length 774 [2023-11-23 15:20:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:27,311 INFO L495 AbstractCegarLoop]: Abstraction has 6150 states and 9616 transitions. [2023-11-23 15:20:27,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 9616 transitions. [2023-11-23 15:20:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-23 15:20:27,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:27,321 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:27,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-23 15:20:27,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:27,541 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:27,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1792003135, now seen corresponding path program 1 times [2023-11-23 15:20:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425806949] [2023-11-23 15:20:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:27,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-23 15:20:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:20:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:20:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:20:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2023-11-23 15:20:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 15:20:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425806949] [2023-11-23 15:20:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425806949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163086706] [2023-11-23 15:20:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:28,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:28,296 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:28,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-23 15:20:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:29,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 4146 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:20:29,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 15:20:29,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 15:20:29,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163086706] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:29,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:29,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:20:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824386089] [2023-11-23 15:20:29,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:29,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:29,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:29,429 INFO L87 Difference]: Start difference. First operand 6150 states and 9616 transitions. Second operand has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:29,922 INFO L93 Difference]: Finished difference Result 10138 states and 15900 transitions. [2023-11-23 15:20:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:29,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 775 [2023-11-23 15:20:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:29,929 INFO L225 Difference]: With dead ends: 10138 [2023-11-23 15:20:29,929 INFO L226 Difference]: Without dead ends: 6159 [2023-11-23 15:20:29,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1572 GetRequests, 1565 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:29,937 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 8 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6935 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:29,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6935 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2023-11-23 15:20:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 6156. [2023-11-23 15:20:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6009 states have (on average 1.5530038275919453) internal successors, (9332), 6009 states have internal predecessors, (9332), 145 states have call successors, (145), 1 states have call predecessors, (145), 1 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-23 15:20:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 9622 transitions. [2023-11-23 15:20:30,374 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 9622 transitions. Word has length 775 [2023-11-23 15:20:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:30,374 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 9622 transitions. [2023-11-23 15:20:30,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 9622 transitions. [2023-11-23 15:20:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-23 15:20:30,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:30,384 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:30,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:30,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-11-23 15:20:30,601 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:30,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1887580802, now seen corresponding path program 2 times [2023-11-23 15:20:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:30,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874080087] [2023-11-23 15:20:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:20:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-23 15:20:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-23 15:20:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-23 15:20:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-23 15:20:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-23 15:20:31,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:31,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874080087] [2023-11-23 15:20:31,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874080087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:31,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013211285] [2023-11-23 15:20:31,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:20:31,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:31,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:31,374 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:31,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-23 15:20:32,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:20:32,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:20:32,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 15:20:32,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-23 15:20:33,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:20:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013211285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:33,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:20:33,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:20:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844158271] [2023-11-23 15:20:33,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:33,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:20:33,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:20:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:20:33,191 INFO L87 Difference]: Start difference. First operand 6156 states and 9622 transitions. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:34,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:34,097 INFO L93 Difference]: Finished difference Result 9433 states and 14737 transitions. [2023-11-23 15:20:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:20:34,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 776 [2023-11-23 15:20:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:34,102 INFO L225 Difference]: With dead ends: 9433 [2023-11-23 15:20:34,102 INFO L226 Difference]: Without dead ends: 4060 [2023-11-23 15:20:34,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:20:34,106 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 786 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:34,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1658 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 15:20:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2023-11-23 15:20:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 3687. [2023-11-23 15:20:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3687 states, 3606 states have (on average 1.5535219079312257) internal successors, (5602), 3606 states have internal predecessors, (5602), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-23 15:20:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5760 transitions. [2023-11-23 15:20:34,367 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5760 transitions. Word has length 776 [2023-11-23 15:20:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:34,367 INFO L495 AbstractCegarLoop]: Abstraction has 3687 states and 5760 transitions. [2023-11-23 15:20:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5760 transitions. [2023-11-23 15:20:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-23 15:20:34,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:34,374 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:34,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:34,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:34,589 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:34,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1368801920, now seen corresponding path program 1 times [2023-11-23 15:20:34,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:34,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459029766] [2023-11-23 15:20:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:20:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-23 15:20:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-23 15:20:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-23 15:20:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-23 15:20:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-23 15:20:35,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459029766] [2023-11-23 15:20:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459029766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865846031] [2023-11-23 15:20:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:35,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:35,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:35,312 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:35,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-23 15:20:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:36,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 4154 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:20:36,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 15:20:36,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-23 15:20:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865846031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:36,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:36,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:20:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869100070] [2023-11-23 15:20:36,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:36,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:36,313 INFO L87 Difference]: Start difference. First operand 3687 states and 5760 transitions. Second operand has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:36,670 INFO L93 Difference]: Finished difference Result 6252 states and 9796 transitions. [2023-11-23 15:20:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:36,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 776 [2023-11-23 15:20:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:36,674 INFO L225 Difference]: With dead ends: 6252 [2023-11-23 15:20:36,675 INFO L226 Difference]: Without dead ends: 3694 [2023-11-23 15:20:36,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1567 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:36,677 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 6922 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8311 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:36,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8311 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2023-11-23 15:20:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3691. [2023-11-23 15:20:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3610 states have (on average 1.5529085872576178) internal successors, (5606), 3610 states have internal predecessors, (5606), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-23 15:20:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 5764 transitions. [2023-11-23 15:20:36,940 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 5764 transitions. Word has length 776 [2023-11-23 15:20:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:36,941 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 5764 transitions. [2023-11-23 15:20:36,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:36,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 5764 transitions. [2023-11-23 15:20:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-23 15:20:36,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:36,948 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:36,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:37,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:37,149 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:37,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1571226499, now seen corresponding path program 2 times [2023-11-23 15:20:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542135703] [2023-11-23 15:20:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2023-11-23 15:20:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-23 15:20:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-23 15:20:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:20:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-23 15:20:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 15:20:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542135703] [2023-11-23 15:20:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542135703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266831287] [2023-11-23 15:20:37,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:20:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:37,883 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:37,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-23 15:20:38,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:20:38,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:20:38,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 15:20:38,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-23 15:20:38,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:20:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266831287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:20:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-11-23 15:20:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374104968] [2023-11-23 15:20:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:20:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:20:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:38,647 INFO L87 Difference]: Start difference. First operand 3691 states and 5764 transitions. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 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) [2023-11-23 15:20:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:39,204 INFO L93 Difference]: Finished difference Result 8919 states and 13979 transitions. [2023-11-23 15:20:39,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:20:39,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 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 777 [2023-11-23 15:20:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:39,211 INFO L225 Difference]: With dead ends: 8919 [2023-11-23 15:20:39,211 INFO L226 Difference]: Without dead ends: 6349 [2023-11-23 15:20:39,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:39,214 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1659 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:39,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 5911 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2023-11-23 15:20:39,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 3755. [2023-11-23 15:20:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3674 states have (on average 1.551986935220468) internal successors, (5702), 3674 states have internal predecessors, (5702), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-23 15:20:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5860 transitions. [2023-11-23 15:20:39,496 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5860 transitions. Word has length 777 [2023-11-23 15:20:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:39,497 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5860 transitions. [2023-11-23 15:20:39,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 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) [2023-11-23 15:20:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5860 transitions. [2023-11-23 15:20:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-11-23 15:20:39,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:39,504 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:39,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:39,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-23 15:20:39,718 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:39,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1501948011, now seen corresponding path program 1 times [2023-11-23 15:20:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:39,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767819863] [2023-11-23 15:20:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:39,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2023-11-23 15:20:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-23 15:20:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:20:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-11-23 15:20:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2023-11-23 15:20:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 15:20:40,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767819863] [2023-11-23 15:20:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767819863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217795109] [2023-11-23 15:20:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:40,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:40,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:40,479 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:40,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-23 15:20:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:41,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 4167 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:20:41,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 196 proven. 6 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 15:20:41,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 15:20:41,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217795109] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:41,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:41,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:20:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958352001] [2023-11-23 15:20:41,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:41,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:41,589 INFO L87 Difference]: Start difference. First operand 3755 states and 5860 transitions. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:41,943 INFO L93 Difference]: Finished difference Result 6356 states and 9948 transitions. [2023-11-23 15:20:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:41,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 779 [2023-11-23 15:20:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:41,947 INFO L225 Difference]: With dead ends: 6356 [2023-11-23 15:20:41,947 INFO L226 Difference]: Without dead ends: 3762 [2023-11-23 15:20:41,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1580 GetRequests, 1573 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:41,950 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 5536 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:41,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6925 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2023-11-23 15:20:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3759. [2023-11-23 15:20:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3678 states have (on average 1.5513866231647635) internal successors, (5706), 3678 states have internal predecessors, (5706), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-23 15:20:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5864 transitions. [2023-11-23 15:20:42,230 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5864 transitions. Word has length 779 [2023-11-23 15:20:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:42,231 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5864 transitions. [2023-11-23 15:20:42,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5864 transitions. [2023-11-23 15:20:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-23 15:20:42,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:42,238 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:42,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:42,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-23 15:20:42,460 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:42,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:42,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1075086259, now seen corresponding path program 2 times [2023-11-23 15:20:42,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:42,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138557452] [2023-11-23 15:20:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:42,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-11-23 15:20:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:20:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-23 15:20:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:20:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:20:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 15:20:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138557452] [2023-11-23 15:20:43,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138557452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874561151] [2023-11-23 15:20:43,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:20:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:43,168 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:43,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-23 15:20:43,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:20:43,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:20:43,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 15:20:43,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 15:20:45,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:20:45,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874561151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:20:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-23 15:20:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59929191] [2023-11-23 15:20:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:20:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:20:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:20:45,326 INFO L87 Difference]: Start difference. First operand 3759 states and 5864 transitions. Second operand has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:46,897 INFO L93 Difference]: Finished difference Result 10460 states and 16266 transitions. [2023-11-23 15:20:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:46,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 780 [2023-11-23 15:20:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:46,906 INFO L225 Difference]: With dead ends: 10460 [2023-11-23 15:20:46,907 INFO L226 Difference]: Without dead ends: 7129 [2023-11-23 15:20:46,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:46,911 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 1598 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:46,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 5115 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 15:20:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2023-11-23 15:20:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 3942. [2023-11-23 15:20:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3861 states have (on average 1.5382025382025382) internal successors, (5939), 3861 states have internal predecessors, (5939), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-23 15:20:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 6097 transitions. [2023-11-23 15:20:47,222 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 6097 transitions. Word has length 780 [2023-11-23 15:20:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:47,222 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 6097 transitions. [2023-11-23 15:20:47,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:20:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 6097 transitions. [2023-11-23 15:20:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-23 15:20:47,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:47,230 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:47,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-23 15:20:47,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-23 15:20:47,447 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:47,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 892912013, now seen corresponding path program 1 times [2023-11-23 15:20:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898350880] [2023-11-23 15:20:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-11-23 15:20:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:20:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-23 15:20:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:20:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:20:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 15:20:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898350880] [2023-11-23 15:20:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898350880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103524591] [2023-11-23 15:20:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:48,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:48,233 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:48,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-23 15:20:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:49,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:20:49,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 196 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 15:20:49,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 15:20:49,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103524591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:49,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:49,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:20:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560757075] [2023-11-23 15:20:49,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:49,407 INFO L87 Difference]: Start difference. First operand 3942 states and 6097 transitions. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:49,782 INFO L93 Difference]: Finished difference Result 6679 states and 10361 transitions. [2023-11-23 15:20:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:49,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 780 [2023-11-23 15:20:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:49,786 INFO L225 Difference]: With dead ends: 6679 [2023-11-23 15:20:49,787 INFO L226 Difference]: Without dead ends: 3949 [2023-11-23 15:20:49,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1575 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:49,789 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 6922 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8311 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:49,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8311 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2023-11-23 15:20:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 3946. [2023-11-23 15:20:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3865 states have (on average 1.5376455368693402) internal successors, (5943), 3865 states have internal predecessors, (5943), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-23 15:20:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6101 transitions. [2023-11-23 15:20:50,078 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6101 transitions. Word has length 780 [2023-11-23 15:20:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:50,078 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 6101 transitions. [2023-11-23 15:20:50,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6101 transitions. [2023-11-23 15:20:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-11-23 15:20:50,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:50,086 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:50,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-23 15:20:50,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-23 15:20:50,308 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:50,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1344152455, now seen corresponding path program 2 times [2023-11-23 15:20:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:50,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439557539] [2023-11-23 15:20:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:50,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-23 15:20:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2023-11-23 15:20:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:20:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-23 15:20:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2023-11-23 15:20:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-23 15:20:51,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:51,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439557539] [2023-11-23 15:20:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439557539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:51,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974262674] [2023-11-23 15:20:51,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:20:51,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:51,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:51,095 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:51,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-23 15:20:51,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:20:51,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:20:51,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 15:20:51,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 169 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-23 15:20:53,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-23 15:20:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974262674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:54,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:54,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2023-11-23 15:20:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142108445] [2023-11-23 15:20:54,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:20:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:20:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:20:54,013 INFO L87 Difference]: Start difference. First operand 3946 states and 6101 transitions. Second operand has 12 states, 12 states have (on average 161.66666666666666) internal successors, (1940), 12 states have internal predecessors, (1940), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 15:20:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:55,697 INFO L93 Difference]: Finished difference Result 5351 states and 8273 transitions. [2023-11-23 15:20:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:20:55,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 161.66666666666666) internal successors, (1940), 12 states have internal predecessors, (1940), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 781 [2023-11-23 15:20:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:55,700 INFO L225 Difference]: With dead ends: 5351 [2023-11-23 15:20:55,701 INFO L226 Difference]: Without dead ends: 2380 [2023-11-23 15:20:55,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1592 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-23 15:20:55,703 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 3237 mSDsluCounter, 4429 mSDsCounter, 0 mSdLazyCounter, 4072 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3237 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:55,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3237 Valid, 5276 Invalid, 4084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4072 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 15:20:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-11-23 15:20:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2356. [2023-11-23 15:20:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2308 states have (on average 1.5320623916811091) internal successors, (3536), 2308 states have internal predecessors, (3536), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:20:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3628 transitions. [2023-11-23 15:20:55,869 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3628 transitions. Word has length 781 [2023-11-23 15:20:55,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:55,869 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3628 transitions. [2023-11-23 15:20:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.66666666666666) internal successors, (1940), 12 states have internal predecessors, (1940), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 15:20:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3628 transitions. [2023-11-23 15:20:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-23 15:20:55,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:55,876 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:55,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:56,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-23 15:20:56,091 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:56,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:56,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2111541205, now seen corresponding path program 1 times [2023-11-23 15:20:56,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:56,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138377896] [2023-11-23 15:20:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:56,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2023-11-23 15:20:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2023-11-23 15:20:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:20:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-23 15:20:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2023-11-23 15:20:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-23 15:20:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138377896] [2023-11-23 15:20:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138377896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893233434] [2023-11-23 15:20:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:56,798 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:56,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-23 15:20:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:57,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 4192 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:20:57,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 15:20:57,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-23 15:20:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893233434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:57,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:20:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165595279] [2023-11-23 15:20:57,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:57,907 INFO L87 Difference]: Start difference. First operand 2356 states and 3628 transitions. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:58,256 INFO L93 Difference]: Finished difference Result 3743 states and 5780 transitions. [2023-11-23 15:20:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:20:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 782 [2023-11-23 15:20:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:58,260 INFO L225 Difference]: With dead ends: 3743 [2023-11-23 15:20:58,260 INFO L226 Difference]: Without dead ends: 2362 [2023-11-23 15:20:58,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1587 GetRequests, 1579 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:20:58,261 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 9696 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11085 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:58,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11085 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:20:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2023-11-23 15:20:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2023-11-23 15:20:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2314 states have (on average 1.5306828003457218) internal successors, (3542), 2314 states have internal predecessors, (3542), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:20:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3634 transitions. [2023-11-23 15:20:58,431 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3634 transitions. Word has length 782 [2023-11-23 15:20:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3634 transitions. [2023-11-23 15:20:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:20:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3634 transitions. [2023-11-23 15:20:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-23 15:20:58,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:58,438 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:20:58,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-23 15:20:58,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:58,651 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:58,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2111182933, now seen corresponding path program 2 times [2023-11-23 15:20:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647137700] [2023-11-23 15:20:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-23 15:20:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-23 15:20:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:20:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:20:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:20:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 15:20:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:59,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647137700] [2023-11-23 15:20:59,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647137700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:59,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946002415] [2023-11-23 15:20:59,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:20:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:59,410 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:20:59,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-23 15:21:00,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:21:00,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:00,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 15:21:00,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-23 15:21:02,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-11-23 15:21:02,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946002415] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:02,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:21:02,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2023-11-23 15:21:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810399384] [2023-11-23 15:21:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:21:02,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:21:02,843 INFO L87 Difference]: Start difference. First operand 2362 states and 3634 transitions. Second operand has 9 states, 9 states have (on average 69.88888888888889) internal successors, (629), 9 states have internal predecessors, (629), 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) [2023-11-23 15:21:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:05,078 INFO L93 Difference]: Finished difference Result 14315 states and 22111 transitions. [2023-11-23 15:21:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 15:21:05,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 69.88888888888889) internal successors, (629), 9 states have internal predecessors, (629), 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 785 [2023-11-23 15:21:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:05,092 INFO L225 Difference]: With dead ends: 14315 [2023-11-23 15:21:05,092 INFO L226 Difference]: Without dead ends: 12928 [2023-11-23 15:21:05,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1614 GetRequests, 1582 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 15:21:05,097 INFO L413 NwaCegarLoop]: 2534 mSDtfsCounter, 9279 mSDsluCounter, 18368 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9294 SdHoareTripleChecker+Valid, 20902 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:05,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9294 Valid, 20902 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 15:21:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12928 states. [2023-11-23 15:21:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12928 to 2370. [2023-11-23 15:21:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2322 states have (on average 1.5305770887166237) internal successors, (3554), 2322 states have internal predecessors, (3554), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3646 transitions. [2023-11-23 15:21:05,337 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3646 transitions. Word has length 785 [2023-11-23 15:21:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:05,338 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3646 transitions. [2023-11-23 15:21:05,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.88888888888889) internal successors, (629), 9 states have internal predecessors, (629), 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) [2023-11-23 15:21:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3646 transitions. [2023-11-23 15:21:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-23 15:21:05,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:05,344 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:05,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-23 15:21:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:05,557 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:05,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash 336175571, now seen corresponding path program 1 times [2023-11-23 15:21:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813576846] [2023-11-23 15:21:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-23 15:21:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-23 15:21:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:21:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:21:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:21:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 15:21:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813576846] [2023-11-23 15:21:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813576846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68680567] [2023-11-23 15:21:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:06,317 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:06,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-23 15:21:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:07,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 4212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:07,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-23 15:21:07,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 15:21:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68680567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:07,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:07,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529665155] [2023-11-23 15:21:07,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:07,461 INFO L87 Difference]: Start difference. First operand 2370 states and 3646 transitions. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:07,762 INFO L93 Difference]: Finished difference Result 3771 states and 5816 transitions. [2023-11-23 15:21:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 785 [2023-11-23 15:21:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:07,766 INFO L225 Difference]: With dead ends: 3771 [2023-11-23 15:21:07,766 INFO L226 Difference]: Without dead ends: 2376 [2023-11-23 15:21:07,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1593 GetRequests, 1585 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:07,767 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 5538 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6927 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:07,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6927 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2023-11-23 15:21:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2376. [2023-11-23 15:21:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2328 states have (on average 1.529209621993127) internal successors, (3560), 2328 states have internal predecessors, (3560), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3652 transitions. [2023-11-23 15:21:07,972 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3652 transitions. Word has length 785 [2023-11-23 15:21:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:07,973 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 3652 transitions. [2023-11-23 15:21:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3652 transitions. [2023-11-23 15:21:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2023-11-23 15:21:07,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:07,979 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:07,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:08,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:08,180 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:08,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash -793007071, now seen corresponding path program 2 times [2023-11-23 15:21:08,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854889930] [2023-11-23 15:21:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:08,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-23 15:21:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-23 15:21:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:21:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-23 15:21:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 753 [2023-11-23 15:21:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 15:21:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854889930] [2023-11-23 15:21:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854889930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717054894] [2023-11-23 15:21:08,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:21:08,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:08,920 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:08,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-23 15:21:09,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:21:09,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:09,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 15:21:09,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-23 15:21:10,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-23 15:21:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717054894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:11,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-11-23 15:21:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768297486] [2023-11-23 15:21:11,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:11,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:21:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:21:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:21:11,552 INFO L87 Difference]: Start difference. First operand 2376 states and 3652 transitions. Second operand has 14 states, 14 states have (on average 138.57142857142858) internal successors, (1940), 14 states have internal predecessors, (1940), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 15:21:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:15,412 INFO L93 Difference]: Finished difference Result 11429 states and 17526 transitions. [2023-11-23 15:21:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 15:21:15,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 138.57142857142858) internal successors, (1940), 14 states have internal predecessors, (1940), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 788 [2023-11-23 15:21:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:15,424 INFO L225 Difference]: With dead ends: 11429 [2023-11-23 15:21:15,424 INFO L226 Difference]: Without dead ends: 9586 [2023-11-23 15:21:15,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1590 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=919, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 15:21:15,429 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 8934 mSDsluCounter, 8354 mSDsCounter, 0 mSdLazyCounter, 5910 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8939 SdHoareTripleChecker+Valid, 9797 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:15,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8939 Valid, 9797 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 5910 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 15:21:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9586 states. [2023-11-23 15:21:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9586 to 2438. [2023-11-23 15:21:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2390 states have (on average 1.5205020920502093) internal successors, (3634), 2390 states have internal predecessors, (3634), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3726 transitions. [2023-11-23 15:21:15,729 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3726 transitions. Word has length 788 [2023-11-23 15:21:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:15,730 INFO L495 AbstractCegarLoop]: Abstraction has 2438 states and 3726 transitions. [2023-11-23 15:21:15,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 138.57142857142858) internal successors, (1940), 14 states have internal predecessors, (1940), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 15:21:15,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3726 transitions. [2023-11-23 15:21:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-11-23 15:21:15,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:15,736 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:15,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-11-23 15:21:15,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:15,951 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:15,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:15,952 INFO L85 PathProgramCache]: Analyzing trace with hash -961639684, now seen corresponding path program 1 times [2023-11-23 15:21:15,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:15,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423432785] [2023-11-23 15:21:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-23 15:21:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-23 15:21:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:21:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-23 15:21:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-23 15:21:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 15:21:16,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423432785] [2023-11-23 15:21:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423432785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682781195] [2023-11-23 15:21:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:16,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:16,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:16,763 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:16,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-23 15:21:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:17,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 4240 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 15:21:17,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 199 proven. 22 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-23 15:21:18,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 15:21:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682781195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:18,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:18,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-23 15:21:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363897388] [2023-11-23 15:21:18,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:21:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:21:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:21:18,050 INFO L87 Difference]: Start difference. First operand 2438 states and 3726 transitions. Second operand has 12 states, 12 states have (on average 60.583333333333336) internal successors, (727), 12 states have internal predecessors, (727), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:18,397 INFO L93 Difference]: Finished difference Result 3875 states and 5936 transitions. [2023-11-23 15:21:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:21:18,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 60.583333333333336) internal successors, (727), 12 states have internal predecessors, (727), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 789 [2023-11-23 15:21:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:18,401 INFO L225 Difference]: With dead ends: 3875 [2023-11-23 15:21:18,401 INFO L226 Difference]: Without dead ends: 2442 [2023-11-23 15:21:18,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1601 GetRequests, 1591 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:21:18,420 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 11 mSDsluCounter, 8331 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9724 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:18,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9724 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-11-23 15:21:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2442. [2023-11-23 15:21:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2394 states have (on average 1.5196324143692566) internal successors, (3638), 2394 states have internal predecessors, (3638), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3730 transitions. [2023-11-23 15:21:18,666 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3730 transitions. Word has length 789 [2023-11-23 15:21:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:18,666 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3730 transitions. [2023-11-23 15:21:18,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 60.583333333333336) internal successors, (727), 12 states have internal predecessors, (727), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3730 transitions. [2023-11-23 15:21:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-11-23 15:21:18,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:18,672 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:18,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:18,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-23 15:21:18,885 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:18,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash -169192548, now seen corresponding path program 2 times [2023-11-23 15:21:18,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:18,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610821027] [2023-11-23 15:21:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:18,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:21:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:21:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:21:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:21:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2023-11-23 15:21:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 15:21:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610821027] [2023-11-23 15:21:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610821027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674522758] [2023-11-23 15:21:19,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:21:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:19,707 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:19,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-23 15:21:20,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:21:20,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:20,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 15:21:20,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 15:21:20,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:21:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674522758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:21:20,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:21:20,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-23 15:21:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262537587] [2023-11-23 15:21:20,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:21:20,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:21:20,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:21:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:20,582 INFO L87 Difference]: Start difference. First operand 2442 states and 3730 transitions. Second operand has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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) [2023-11-23 15:21:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:21,344 INFO L93 Difference]: Finished difference Result 6721 states and 10301 transitions. [2023-11-23 15:21:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:21:21,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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 791 [2023-11-23 15:21:21,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:21,350 INFO L225 Difference]: With dead ends: 6721 [2023-11-23 15:21:21,350 INFO L226 Difference]: Without dead ends: 5284 [2023-11-23 15:21:21,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:21:21,352 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 4079 mSDsluCounter, 7522 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 9110 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:21,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 9110 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2023-11-23 15:21:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 2436. [2023-11-23 15:21:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2388 states have (on average 1.520100502512563) internal successors, (3630), 2388 states have internal predecessors, (3630), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3722 transitions. [2023-11-23 15:21:21,593 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3722 transitions. Word has length 791 [2023-11-23 15:21:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:21,594 INFO L495 AbstractCegarLoop]: Abstraction has 2436 states and 3722 transitions. [2023-11-23 15:21:21,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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) [2023-11-23 15:21:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3722 transitions. [2023-11-23 15:21:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-11-23 15:21:21,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:21,600 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:21,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-11-23 15:21:21,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-23 15:21:21,810 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:21,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1212787804, now seen corresponding path program 1 times [2023-11-23 15:21:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522394043] [2023-11-23 15:21:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:21:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:21:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:21:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:21:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2023-11-23 15:21:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 15:21:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522394043] [2023-11-23 15:21:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522394043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867328986] [2023-11-23 15:21:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:22,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:22,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:22,569 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:22,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-23 15:21:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:23,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 4256 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:23,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-11-23 15:21:23,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 15:21:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867328986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:23,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585058871] [2023-11-23 15:21:23,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:23,868 INFO L87 Difference]: Start difference. First operand 2436 states and 3722 transitions. Second operand has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:24,248 INFO L93 Difference]: Finished difference Result 3877 states and 5936 transitions. [2023-11-23 15:21:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:24,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 791 [2023-11-23 15:21:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:24,251 INFO L225 Difference]: With dead ends: 3877 [2023-11-23 15:21:24,251 INFO L226 Difference]: Without dead ends: 2442 [2023-11-23 15:21:24,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1605 GetRequests, 1597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:24,252 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 6924 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:24,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8313 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-11-23 15:21:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2442. [2023-11-23 15:21:24,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2394 states have (on average 1.518796992481203) internal successors, (3636), 2394 states have internal predecessors, (3636), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3728 transitions. [2023-11-23 15:21:24,489 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3728 transitions. Word has length 791 [2023-11-23 15:21:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:24,490 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3728 transitions. [2023-11-23 15:21:24,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.22222222222223) internal successors, (722), 9 states have internal predecessors, (722), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3728 transitions. [2023-11-23 15:21:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2023-11-23 15:21:24,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:24,496 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:24,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:24,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-23 15:21:24,711 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:24,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1227198712, now seen corresponding path program 2 times [2023-11-23 15:21:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:24,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580596937] [2023-11-23 15:21:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-23 15:21:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:21:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-11-23 15:21:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-11-23 15:21:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2023-11-23 15:21:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 15:21:25,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580596937] [2023-11-23 15:21:25,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580596937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983689296] [2023-11-23 15:21:25,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:21:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:25,474 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:25,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-23 15:21:26,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:21:26,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:26,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 4277 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 15:21:26,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-23 15:21:27,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:21:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983689296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:21:27,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:21:27,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:21:27,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512375447] [2023-11-23 15:21:27,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:21:27,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:21:27,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:27,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:21:27,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:21:27,630 INFO L87 Difference]: Start difference. First operand 2442 states and 3728 transitions. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:28,003 INFO L93 Difference]: Finished difference Result 3883 states and 5936 transitions. [2023-11-23 15:21:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:21:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 794 [2023-11-23 15:21:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:28,007 INFO L225 Difference]: With dead ends: 3883 [2023-11-23 15:21:28,007 INFO L226 Difference]: Without dead ends: 2442 [2023-11-23 15:21:28,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:21:28,009 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 882 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:28,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2580 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-11-23 15:21:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2442. [2023-11-23 15:21:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2394 states have (on average 1.517126148705096) internal successors, (3632), 2394 states have internal predecessors, (3632), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3724 transitions. [2023-11-23 15:21:28,337 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3724 transitions. Word has length 794 [2023-11-23 15:21:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:28,337 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3724 transitions. [2023-11-23 15:21:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3724 transitions. [2023-11-23 15:21:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2023-11-23 15:21:28,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:28,343 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:28,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:28,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:28,549 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:28,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1146406201, now seen corresponding path program 1 times [2023-11-23 15:21:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770992164] [2023-11-23 15:21:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:21:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-23 15:21:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:21:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2023-11-23 15:21:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 760 [2023-11-23 15:21:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-11-23 15:21:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770992164] [2023-11-23 15:21:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770992164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:21:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:21:29,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:21:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260264439] [2023-11-23 15:21:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:21:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:21:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:29,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:21:29,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:21:29,338 INFO L87 Difference]: Start difference. First operand 2442 states and 3724 transitions. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:29,725 INFO L93 Difference]: Finished difference Result 3905 states and 5962 transitions. [2023-11-23 15:21:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:21:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 795 [2023-11-23 15:21:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:29,729 INFO L225 Difference]: With dead ends: 3905 [2023-11-23 15:21:29,729 INFO L226 Difference]: Without dead ends: 2442 [2023-11-23 15:21:29,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:21:29,730 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 917 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 4049 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:29,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 4049 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-11-23 15:21:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2442. [2023-11-23 15:21:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2394 states have (on average 1.5162907268170427) internal successors, (3630), 2394 states have internal predecessors, (3630), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3722 transitions. [2023-11-23 15:21:29,971 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3722 transitions. Word has length 795 [2023-11-23 15:21:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:29,971 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3722 transitions. [2023-11-23 15:21:29,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3722 transitions. [2023-11-23 15:21:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-11-23 15:21:29,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:29,977 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:29,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-23 15:21:29,978 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:29,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1520378944, now seen corresponding path program 1 times [2023-11-23 15:21:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:29,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570297795] [2023-11-23 15:21:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2023-11-23 15:21:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-23 15:21:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-23 15:21:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:21:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 761 [2023-11-23 15:21:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 15:21:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570297795] [2023-11-23 15:21:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570297795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132429606] [2023-11-23 15:21:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:30,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:30,753 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:30,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-23 15:21:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:32,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 4283 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:32,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-23 15:21:32,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 15:21:32,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132429606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:32,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:32,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345895923] [2023-11-23 15:21:32,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:32,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:32,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:32,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:32,112 INFO L87 Difference]: Start difference. First operand 2442 states and 3722 transitions. Second operand has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:32,476 INFO L93 Difference]: Finished difference Result 3889 states and 5936 transitions. [2023-11-23 15:21:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 796 [2023-11-23 15:21:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:32,479 INFO L225 Difference]: With dead ends: 3889 [2023-11-23 15:21:32,479 INFO L226 Difference]: Without dead ends: 2448 [2023-11-23 15:21:32,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:32,481 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 8 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:32,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8295 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2023-11-23 15:21:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2023-11-23 15:21:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2400 states have (on average 1.515) internal successors, (3636), 2400 states have internal predecessors, (3636), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 3728 transitions. [2023-11-23 15:21:32,732 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 3728 transitions. Word has length 796 [2023-11-23 15:21:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:32,732 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 3728 transitions. [2023-11-23 15:21:32,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 3728 transitions. [2023-11-23 15:21:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2023-11-23 15:21:32,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:32,739 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:32,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:32,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-11-23 15:21:32,952 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:32,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -348461229, now seen corresponding path program 2 times [2023-11-23 15:21:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649951957] [2023-11-23 15:21:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-11-23 15:21:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:21:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-23 15:21:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 753 [2023-11-23 15:21:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2023-11-23 15:21:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-23 15:21:33,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649951957] [2023-11-23 15:21:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649951957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726713912] [2023-11-23 15:21:33,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:21:33,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:33,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:33,738 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:33,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-23 15:21:35,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:21:35,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:35,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 4304 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:35,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 15:21:35,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-23 15:21:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726713912] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:35,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856322466] [2023-11-23 15:21:35,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:35,112 INFO L87 Difference]: Start difference. First operand 2448 states and 3728 transitions. Second operand has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:35,485 INFO L93 Difference]: Finished difference Result 3901 states and 5948 transitions. [2023-11-23 15:21:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 799 [2023-11-23 15:21:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:35,488 INFO L225 Difference]: With dead ends: 3901 [2023-11-23 15:21:35,488 INFO L226 Difference]: Without dead ends: 2454 [2023-11-23 15:21:35,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1621 GetRequests, 1613 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:35,489 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 8 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:35,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8295 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:35,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2023-11-23 15:21:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2454. [2023-11-23 15:21:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2406 states have (on average 1.513715710723192) internal successors, (3642), 2406 states have internal predecessors, (3642), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3734 transitions. [2023-11-23 15:21:35,796 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3734 transitions. Word has length 799 [2023-11-23 15:21:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:35,797 INFO L495 AbstractCegarLoop]: Abstraction has 2454 states and 3734 transitions. [2023-11-23 15:21:35,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3734 transitions. [2023-11-23 15:21:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2023-11-23 15:21:35,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:35,803 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:35,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:36,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:36,017 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:36,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1221025997, now seen corresponding path program 3 times [2023-11-23 15:21:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043099017] [2023-11-23 15:21:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-23 15:21:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2023-11-23 15:21:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2023-11-23 15:21:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2023-11-23 15:21:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2023-11-23 15:21:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-23 15:21:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043099017] [2023-11-23 15:21:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043099017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:36,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295713686] [2023-11-23 15:21:36,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 15:21:36,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:36,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:36,779 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:36,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-23 15:21:38,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 15:21:38,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:38,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 3550 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 15:21:38,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 15:21:39,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:21:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295713686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:21:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:21:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:21:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199351659] [2023-11-23 15:21:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:21:39,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:21:39,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:21:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:21:39,686 INFO L87 Difference]: Start difference. First operand 2454 states and 3734 transitions. Second operand has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:40,089 INFO L93 Difference]: Finished difference Result 3907 states and 5948 transitions. [2023-11-23 15:21:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:21:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 802 [2023-11-23 15:21:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:40,093 INFO L225 Difference]: With dead ends: 3907 [2023-11-23 15:21:40,093 INFO L226 Difference]: Without dead ends: 2454 [2023-11-23 15:21:40,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:21:40,099 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 885 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:40,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 2564 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2023-11-23 15:21:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2454. [2023-11-23 15:21:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2406 states have (on average 1.5128844555278471) internal successors, (3640), 2406 states have internal predecessors, (3640), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3732 transitions. [2023-11-23 15:21:40,427 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3732 transitions. Word has length 802 [2023-11-23 15:21:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:40,428 INFO L495 AbstractCegarLoop]: Abstraction has 2454 states and 3732 transitions. [2023-11-23 15:21:40,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3732 transitions. [2023-11-23 15:21:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2023-11-23 15:21:40,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:40,436 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:40,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-23 15:21:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:40,652 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:40,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1400351413, now seen corresponding path program 1 times [2023-11-23 15:21:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361629168] [2023-11-23 15:21:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-23 15:21:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2023-11-23 15:21:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2023-11-23 15:21:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2023-11-23 15:21:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2023-11-23 15:21:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-23 15:21:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:41,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361629168] [2023-11-23 15:21:41,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361629168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:41,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439215106] [2023-11-23 15:21:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:41,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:41,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:41,430 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:41,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-23 15:21:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:42,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 4326 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:42,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-23 15:21:42,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-23 15:21:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439215106] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:42,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:42,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:42,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264747975] [2023-11-23 15:21:42,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:42,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:42,793 INFO L87 Difference]: Start difference. First operand 2454 states and 3732 transitions. Second operand has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:43,153 INFO L93 Difference]: Finished difference Result 3913 states and 5956 transitions. [2023-11-23 15:21:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:43,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 802 [2023-11-23 15:21:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:43,157 INFO L225 Difference]: With dead ends: 3913 [2023-11-23 15:21:43,157 INFO L226 Difference]: Without dead ends: 2460 [2023-11-23 15:21:43,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1627 GetRequests, 1619 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:43,158 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 8 mSDsluCounter, 5522 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:43,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6907 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2023-11-23 15:21:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2460. [2023-11-23 15:21:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2412 states have (on average 1.5116086235489221) internal successors, (3646), 2412 states have internal predecessors, (3646), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3738 transitions. [2023-11-23 15:21:43,434 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3738 transitions. Word has length 802 [2023-11-23 15:21:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:43,434 INFO L495 AbstractCegarLoop]: Abstraction has 2460 states and 3738 transitions. [2023-11-23 15:21:43,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3738 transitions. [2023-11-23 15:21:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2023-11-23 15:21:43,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:43,441 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:43,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:43,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:43,646 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:43,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash -391787667, now seen corresponding path program 2 times [2023-11-23 15:21:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994038211] [2023-11-23 15:21:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-23 15:21:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-23 15:21:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2023-11-23 15:21:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2023-11-23 15:21:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 770 [2023-11-23 15:21:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 15:21:44,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:44,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994038211] [2023-11-23 15:21:44,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994038211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:44,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106655052] [2023-11-23 15:21:44,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:21:44,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:44,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:44,458 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:44,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-23 15:21:45,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:21:45,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:45,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 4347 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:45,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 199 proven. 6 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-23 15:21:45,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 15:21:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106655052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:45,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:45,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:45,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874316018] [2023-11-23 15:21:45,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:45,915 INFO L87 Difference]: Start difference. First operand 2460 states and 3738 transitions. Second operand has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:46,280 INFO L93 Difference]: Finished difference Result 3924 states and 5965 transitions. [2023-11-23 15:21:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:21:46,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 805 [2023-11-23 15:21:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:46,283 INFO L225 Difference]: With dead ends: 3924 [2023-11-23 15:21:46,283 INFO L226 Difference]: Without dead ends: 2465 [2023-11-23 15:21:46,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1632 GetRequests, 1625 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:46,285 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 8 mSDsluCounter, 5520 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6905 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:46,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6905 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-11-23 15:21:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2462. [2023-11-23 15:21:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2414 states have (on average 1.5111847555923779) internal successors, (3648), 2414 states have internal predecessors, (3648), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 15:21:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3740 transitions. [2023-11-23 15:21:46,566 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3740 transitions. Word has length 805 [2023-11-23 15:21:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:46,568 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 3740 transitions. [2023-11-23 15:21:46,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3740 transitions. [2023-11-23 15:21:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-11-23 15:21:46,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:46,575 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:46,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:46,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2023-11-23 15:21:46,788 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:46,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1132458082, now seen corresponding path program 3 times [2023-11-23 15:21:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892709746] [2023-11-23 15:21:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:21:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:21:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:21:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 760 [2023-11-23 15:21:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2023-11-23 15:21:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 15:21:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892709746] [2023-11-23 15:21:47,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892709746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598706594] [2023-11-23 15:21:47,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 15:21:47,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:47,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:47,553 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:47,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-23 15:21:48,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 15:21:48,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:48,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 15:21:48,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-23 15:21:49,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:21:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598706594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:21:49,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:21:49,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-23 15:21:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287597182] [2023-11-23 15:21:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:21:49,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:21:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:49,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:21:49,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:49,625 INFO L87 Difference]: Start difference. First operand 2462 states and 3740 transitions. Second operand has 7 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:51,724 INFO L93 Difference]: Finished difference Result 7178 states and 10941 transitions. [2023-11-23 15:21:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 806 [2023-11-23 15:21:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:51,731 INFO L225 Difference]: With dead ends: 7178 [2023-11-23 15:21:51,731 INFO L226 Difference]: Without dead ends: 5717 [2023-11-23 15:21:51,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:51,733 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 3850 mSDsluCounter, 3523 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3860 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:51,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3860 Valid, 4493 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 15:21:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2023-11-23 15:21:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 3410. [2023-11-23 15:21:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3334 states have (on average 1.5071985602879423) internal successors, (5025), 3334 states have internal predecessors, (5025), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-23 15:21:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 5173 transitions. [2023-11-23 15:21:52,071 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 5173 transitions. Word has length 806 [2023-11-23 15:21:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:52,071 INFO L495 AbstractCegarLoop]: Abstraction has 3410 states and 5173 transitions. [2023-11-23 15:21:52,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 15:21:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 5173 transitions. [2023-11-23 15:21:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-11-23 15:21:52,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:52,079 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:52,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:52,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-11-23 15:21:52,293 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:52,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash -356400736, now seen corresponding path program 1 times [2023-11-23 15:21:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:52,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061431699] [2023-11-23 15:21:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:52,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:21:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:21:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:21:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 760 [2023-11-23 15:21:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2023-11-23 15:21:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 15:21:53,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061431699] [2023-11-23 15:21:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061431699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446277475] [2023-11-23 15:21:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:53,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:53,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:53,081 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:53,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-23 15:21:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:54,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 4355 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:54,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-11-23 15:21:54,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 15:21:54,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446277475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:54,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124439847] [2023-11-23 15:21:54,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:54,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:54,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:54,508 INFO L87 Difference]: Start difference. First operand 3410 states and 5173 transitions. Second operand has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:54,959 INFO L93 Difference]: Finished difference Result 4877 states and 7405 transitions. [2023-11-23 15:21:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:54,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 806 [2023-11-23 15:21:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:54,964 INFO L225 Difference]: With dead ends: 4877 [2023-11-23 15:21:54,964 INFO L226 Difference]: Without dead ends: 3416 [2023-11-23 15:21:54,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1635 GetRequests, 1627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:54,966 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 8 mSDsluCounter, 8286 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9671 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:54,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9671 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2023-11-23 15:21:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 3416. [2023-11-23 15:21:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 3340 states have (on average 1.5062874251497007) internal successors, (5031), 3340 states have internal predecessors, (5031), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-23 15:21:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 5179 transitions. [2023-11-23 15:21:55,313 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 5179 transitions. Word has length 806 [2023-11-23 15:21:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:55,313 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 5179 transitions. [2023-11-23 15:21:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 5179 transitions. [2023-11-23 15:21:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2023-11-23 15:21:55,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:55,321 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:55,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:55,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-11-23 15:21:55,542 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:55,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2101076028, now seen corresponding path program 2 times [2023-11-23 15:21:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211086158] [2023-11-23 15:21:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:21:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:21:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:21:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:21:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:21:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:21:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:21:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:21:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-11-23 15:21:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 763 [2023-11-23 15:21:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2023-11-23 15:21:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:21:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-23 15:21:56,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:21:56,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211086158] [2023-11-23 15:21:56,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211086158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:21:56,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550384437] [2023-11-23 15:21:56,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:21:56,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:21:56,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:21:56,316 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:21:56,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-23 15:21:57,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:21:57,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:21:57,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 4376 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:21:57,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:21:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-23 15:21:57,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:21:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-23 15:21:57,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550384437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:21:57,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:21:57,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:21:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076164772] [2023-11-23 15:21:57,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:21:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:21:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:21:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:21:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:21:57,819 INFO L87 Difference]: Start difference. First operand 3416 states and 5179 transitions. Second operand has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:21:58,341 INFO L93 Difference]: Finished difference Result 4889 states and 7417 transitions. [2023-11-23 15:21:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:21:58,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 809 [2023-11-23 15:21:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:21:58,345 INFO L225 Difference]: With dead ends: 4889 [2023-11-23 15:21:58,345 INFO L226 Difference]: Without dead ends: 3422 [2023-11-23 15:21:58,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1633 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:21:58,346 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 8 mSDsluCounter, 6907 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:21:58,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8292 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:21:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2023-11-23 15:21:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3422. [2023-11-23 15:21:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3346 states have (on average 1.5053795576808129) internal successors, (5037), 3346 states have internal predecessors, (5037), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-23 15:21:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5185 transitions. [2023-11-23 15:21:58,693 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5185 transitions. Word has length 809 [2023-11-23 15:21:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:21:58,694 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 5185 transitions. [2023-11-23 15:21:58,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.44444444444444) internal successors, (724), 9 states have internal predecessors, (724), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 15:21:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5185 transitions. [2023-11-23 15:21:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2023-11-23 15:21:58,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:21:58,702 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:21:58,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-11-23 15:21:58,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-11-23 15:21:58,905 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:21:58,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:21:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1736454341, now seen corresponding path program 3 times [2023-11-23 15:21:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:21:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581789062] [2023-11-23 15:21:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:21:58,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15