./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_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.safe_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 a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:16:42,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:16:43,036 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 15:16:43,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:16:43,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:16:43,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:16:43,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:16:43,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:16:43,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 15:16:43,073 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 15:16:43,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:16:43,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:16:43,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:16:43,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:16:43,074 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:16:43,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:16:43,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 15:16:43,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:16:43,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:16:43,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 15:16:43,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:16:43,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 15:16:43,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 15:16:43,076 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:16:43,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:16:43,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:16:43,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:16:43,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:16:43,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:16:43,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:16:43,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:16:43,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 15:16:43,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:16:43,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:16:43,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:16:43,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:16:43,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 15:16:43,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:16:43,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:16:43,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 [2023-11-23 15:16:43,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:16:43,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:16:43,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:16:43,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:16:43,277 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:16:43,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2023-11-23 15:16:44,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:16:44,548 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:16:44,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2023-11-23 15:16:44,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c463aeeeb/57925af8c6f74b4f9a8caea4b9542f55/FLAG461d45de2 [2023-11-23 15:16:44,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c463aeeeb/57925af8c6f74b4f9a8caea4b9542f55 [2023-11-23 15:16:44,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:16:44,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:16:44,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:16:44,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:16:44,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:16:44,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:44" (1/1) ... [2023-11-23 15:16:44,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd01841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:44, skipping insertion in model container [2023-11-23 15:16:44,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:16:44" (1/1) ... [2023-11-23 15:16:44,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:16:44,774 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.safe_linked_list_fifo_n2d4.c[1266,1279] [2023-11-23 15:16:45,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:16:45,063 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:16:45,071 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.safe_linked_list_fifo_n2d4.c[1266,1279] [2023-11-23 15:16:45,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:16:45,170 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:16:45,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45 WrapperNode [2023-11-23 15:16:45,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:16:45,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:16:45,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:16:45,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:16:45,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,549 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4288 [2023-11-23 15:16:45,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:16:45,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:16:45,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:16:45,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:16:45,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,712 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 15:16:45,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:16:45,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:16:45,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:16:45,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:16:45,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (1/1) ... [2023-11-23 15:16:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:16:45,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:16:45,944 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 15:16:45,973 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 15:16:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:16:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 15:16:45,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 15:16:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 15:16:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 15:16:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 15:16:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:16:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:16:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 15:16:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 15:16:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 15:16:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 15:16:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:16:46,288 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:16:46,290 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:16:48,252 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:16:48,318 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:16:48,318 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-23 15:16:48,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:48 BoogieIcfgContainer [2023-11-23 15:16:48,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:16:48,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:16:48,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:16:48,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:16:48,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:16:44" (1/3) ... [2023-11-23 15:16:48,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5b2a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:48, skipping insertion in model container [2023-11-23 15:16:48,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:45" (2/3) ... [2023-11-23 15:16:48,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5b2a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:16:48, skipping insertion in model container [2023-11-23 15:16:48,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:16:48" (3/3) ... [2023-11-23 15:16:48,325 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2023-11-23 15:16:48,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:16:48,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 15:16:48,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:16:48,378 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;@1993788e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:16:48,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 15:16:48,383 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 15:16:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-23 15:16:48,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:16:48,412 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 15:16:48,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:16:48,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:16:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1183569807, now seen corresponding path program 1 times [2023-11-23 15:16:48,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:16:48,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820924639] [2023-11-23 15:16:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:48,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:16:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-23 15:16:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-23 15:16:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:16:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:16:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-23 15:16:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,128 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 15:16:49,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:16:49,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820924639] [2023-11-23 15:16:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820924639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:16:49,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:16:49,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 15:16:49,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963575277] [2023-11-23 15:16:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:16:49,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 15:16:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:16:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 15:16:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 15:16:49,175 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 15:16:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:16:49,272 INFO L93 Difference]: Finished difference Result 1715 states and 2873 transitions. [2023-11-23 15:16:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 15:16:49,274 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 15:16:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:16:49,290 INFO L225 Difference]: With dead ends: 1715 [2023-11-23 15:16:49,290 INFO L226 Difference]: Without dead ends: 859 [2023-11-23 15:16:49,297 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 15:16:49,301 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 15:16:49,301 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 15:16:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-11-23 15:16:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2023-11-23 15:16:49,353 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 15:16:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1416 transitions. [2023-11-23 15:16:49,356 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1416 transitions. Word has length 334 [2023-11-23 15:16:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:16:49,357 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1416 transitions. [2023-11-23 15:16:49,357 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 15:16:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1416 transitions. [2023-11-23 15:16:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-23 15:16:49,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:16:49,361 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 15:16:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 15:16:49,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:16:49,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:16:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 739740613, now seen corresponding path program 1 times [2023-11-23 15:16:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:16:49,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773558783] [2023-11-23 15:16:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:16:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-23 15:16:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-23 15:16:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:16:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:16:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-23 15:16:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:49,758 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 15:16:49,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:16:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773558783] [2023-11-23 15:16:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773558783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:16:49,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:16:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:16:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961186230] [2023-11-23 15:16:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:16:49,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:16:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:16:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:16:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:16:49,768 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 15:16:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:16:49,852 INFO L93 Difference]: Finished difference Result 1717 states and 2831 transitions. [2023-11-23 15:16:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:16:49,854 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 15:16:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:16:49,857 INFO L225 Difference]: With dead ends: 1717 [2023-11-23 15:16:49,857 INFO L226 Difference]: Without dead ends: 863 [2023-11-23 15:16:49,859 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 15:16:49,860 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 5 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:16:49,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2788 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:16:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-23 15:16:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2023-11-23 15:16:49,892 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 15:16:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1417 transitions. [2023-11-23 15:16:49,894 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1417 transitions. Word has length 334 [2023-11-23 15:16:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:16:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1417 transitions. [2023-11-23 15:16:49,895 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 15:16:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1417 transitions. [2023-11-23 15:16:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-23 15:16:49,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:16:49,900 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 15:16:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 15:16:49,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:16:49,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:16:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 291099465, now seen corresponding path program 1 times [2023-11-23 15:16:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:16:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082082853] [2023-11-23 15:16:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:49,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:16:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-23 15:16:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-23 15:16:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:16:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:16:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-23 15:16:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:50,586 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 15:16:50,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:16:50,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082082853] [2023-11-23 15:16:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082082853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:16:50,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185436955] [2023-11-23 15:16:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:50,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:16:50,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:16:50,626 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 15:16:50,676 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 15:16:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:16:51,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:16:51,165 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 15:16:51,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:16:51,194 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 15:16:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185436955] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:16:51,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:16:51,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-23 15:16:51,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34484915] [2023-11-23 15:16:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:16:51,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:16:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:16:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:16:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:16:51,197 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 15:16:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:16:51,249 INFO L93 Difference]: Finished difference Result 1579 states and 2601 transitions. [2023-11-23 15:16:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:16:51,250 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 15:16:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:16:51,252 INFO L225 Difference]: With dead ends: 1579 [2023-11-23 15:16:51,252 INFO L226 Difference]: Without dead ends: 861 [2023-11-23 15:16:51,253 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 15:16:51,254 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 15:16:51,254 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 15:16:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-23 15:16:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-23 15:16:51,263 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 15:16:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1418 transitions. [2023-11-23 15:16:51,265 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1418 transitions. Word has length 337 [2023-11-23 15:16:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:16:51,265 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1418 transitions. [2023-11-23 15:16:51,266 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 15:16:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1418 transitions. [2023-11-23 15:16:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-23 15:16:51,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:16:51,268 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 15:16:51,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 15:16:51,487 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 15:16:51,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:16:51,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:16:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 534669315, now seen corresponding path program 1 times [2023-11-23 15:16:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:16:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075060340] [2023-11-23 15:16:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:16:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-23 15:16:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-23 15:16:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-23 15:16:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-23 15:16:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:16:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:51,823 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 15:16:51,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:16:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075060340] [2023-11-23 15:16:51,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075060340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:16:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53663516] [2023-11-23 15:16:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:51,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:16:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:16:51,825 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 15:16:51,852 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 15:16:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:52,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 15:16:52,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:16:52,332 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 15:16:52,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:16:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:16:53,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53663516] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:16:53,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:16:53,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3] total 13 [2023-11-23 15:16:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554200584] [2023-11-23 15:16:53,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:16:53,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:16:53,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:16:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:16:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:16:53,387 INFO L87 Difference]: Start difference. First operand 861 states and 1418 transitions. Second operand has 9 states, 9 states have (on average 35.333333333333336) internal successors, (318), 9 states have internal predecessors, (318), 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 15:16:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:16:56,930 INFO L93 Difference]: Finished difference Result 4127 states and 6718 transitions. [2023-11-23 15:16:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 15:16:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.333333333333336) internal successors, (318), 9 states have internal predecessors, (318), 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 340 [2023-11-23 15:16:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:16:56,941 INFO L225 Difference]: With dead ends: 4127 [2023-11-23 15:16:56,942 INFO L226 Difference]: Without dead ends: 3608 [2023-11-23 15:16:56,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2023-11-23 15:16:56,945 INFO L413 NwaCegarLoop]: 2368 mSDtfsCounter, 14971 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 4139 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14976 SdHoareTripleChecker+Valid, 7953 SdHoareTripleChecker+Invalid, 4544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 4139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:16:56,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14976 Valid, 7953 Invalid, 4544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 4139 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 15:16:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2023-11-23 15:16:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 940. [2023-11-23 15:16:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 929 states have (on average 1.643702906350915) internal successors, (1527), 929 states have internal predecessors, (1527), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:16:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1545 transitions. [2023-11-23 15:16:56,986 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1545 transitions. Word has length 340 [2023-11-23 15:16:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:16:56,989 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1545 transitions. [2023-11-23 15:16:56,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.333333333333336) internal successors, (318), 9 states have internal predecessors, (318), 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 15:16:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1545 transitions. [2023-11-23 15:16:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-23 15:16:56,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:16:56,992 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, 1] [2023-11-23 15:16:57,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 15:16:57,234 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 15:16:57,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:16:57,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:16:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2143737229, now seen corresponding path program 1 times [2023-11-23 15:16:57,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:16:57,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174119267] [2023-11-23 15:16:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:16:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-11-23 15:16:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-23 15:16:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-23 15:16:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-11-23 15:16:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:16:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:57,559 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 15:16:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:16:57,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174119267] [2023-11-23 15:16:57,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174119267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:16:57,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272038386] [2023-11-23 15:16:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:16:57,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:16:57,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:16:57,561 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 15:16:57,593 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 15:16:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:16:58,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 15:16:58,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:16:58,099 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 15:16:58,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:16:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:16:58,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272038386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:16:58,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:16:58,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 13 [2023-11-23 15:16:58,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240063409] [2023-11-23 15:16:58,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:16:58,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:16:58,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:16:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:16:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:16:58,453 INFO L87 Difference]: Start difference. First operand 940 states and 1545 transitions. Second operand has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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 15:17:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:00,390 INFO L93 Difference]: Finished difference Result 3714 states and 6042 transitions. [2023-11-23 15:17:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:17:00,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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 341 [2023-11-23 15:17:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:00,398 INFO L225 Difference]: With dead ends: 3714 [2023-11-23 15:17:00,398 INFO L226 Difference]: Without dead ends: 2796 [2023-11-23 15:17:00,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:17:00,400 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 2928 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 7203 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:00,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 7203 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 15:17:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2023-11-23 15:17:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 1722. [2023-11-23 15:17:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1702 states have (on average 1.5293772032902468) internal successors, (2603), 1702 states have internal predecessors, (2603), 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 15:17:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2639 transitions. [2023-11-23 15:17:00,443 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2639 transitions. Word has length 341 [2023-11-23 15:17:00,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:00,444 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2639 transitions. [2023-11-23 15:17:00,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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 15:17:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2639 transitions. [2023-11-23 15:17:00,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-23 15:17:00,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:00,447 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, 1] [2023-11-23 15:17:00,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 15:17:00,660 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 15:17:00,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:00,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash 456098947, now seen corresponding path program 1 times [2023-11-23 15:17:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:00,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705777451] [2023-11-23 15:17:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-23 15:17:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-23 15:17:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-23 15:17:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-23 15:17:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:17:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:00,937 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 15:17:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705777451] [2023-11-23 15:17:00,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705777451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:00,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6231190] [2023-11-23 15:17:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:00,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:00,940 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 15:17:00,954 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 15:17:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:01,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 15:17:01,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:01,452 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 15:17:01,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:01,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6231190] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:01,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:17:01,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 3] total 12 [2023-11-23 15:17:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234282517] [2023-11-23 15:17:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:01,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:17:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:01,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:17:01,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:17:01,924 INFO L87 Difference]: Start difference. First operand 1722 states and 2639 transitions. Second operand has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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 15:17:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:02,039 INFO L93 Difference]: Finished difference Result 2938 states and 4581 transitions. [2023-11-23 15:17:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:17:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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 341 [2023-11-23 15:17:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:02,045 INFO L225 Difference]: With dead ends: 2938 [2023-11-23 15:17:02,045 INFO L226 Difference]: Without dead ends: 1870 [2023-11-23 15:17:02,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:17:02,047 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 6466 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6466 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:02,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6466 Valid, 2256 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:17:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2023-11-23 15:17:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1722. [2023-11-23 15:17:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1702 states have (on average 1.528202115158637) internal successors, (2601), 1702 states have internal predecessors, (2601), 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 15:17:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2637 transitions. [2023-11-23 15:17:02,079 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2637 transitions. Word has length 341 [2023-11-23 15:17:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2637 transitions. [2023-11-23 15:17:02,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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 15:17:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2637 transitions. [2023-11-23 15:17:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-23 15:17:02,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:02,083 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, 1] [2023-11-23 15:17:02,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 15:17:02,295 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 15:17:02,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:02,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash 61732161, now seen corresponding path program 1 times [2023-11-23 15:17:02,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:02,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106072506] [2023-11-23 15:17:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-23 15:17:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-23 15:17:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-23 15:17:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-23 15:17:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-23 15:17:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,576 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 15:17:02,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106072506] [2023-11-23 15:17:02,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106072506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461509655] [2023-11-23 15:17:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:02,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:02,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:02,578 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 15:17:02,579 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 15:17:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:02,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 15:17:02,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:02,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:17:02,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461509655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:02,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:17:02,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 15:17:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412250220] [2023-11-23 15:17:02,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:02,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:17:02,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:17:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:17:02,991 INFO L87 Difference]: Start difference. First operand 1722 states and 2637 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 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 15:17:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:03,048 INFO L93 Difference]: Finished difference Result 1731 states and 2646 transitions. [2023-11-23 15:17:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:17:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 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 341 [2023-11-23 15:17:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:03,051 INFO L225 Difference]: With dead ends: 1731 [2023-11-23 15:17:03,051 INFO L226 Difference]: Without dead ends: 944 [2023-11-23 15:17:03,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:17:03,052 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 5 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2785 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 15:17:03,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2785 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:17:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-23 15:17:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 941. [2023-11-23 15:17:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 930 states have (on average 1.6419354838709677) internal successors, (1527), 930 states have internal predecessors, (1527), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:17:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1545 transitions. [2023-11-23 15:17:03,070 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1545 transitions. Word has length 341 [2023-11-23 15:17:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:03,070 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1545 transitions. [2023-11-23 15:17:03,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 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 15:17:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1545 transitions. [2023-11-23 15:17:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-23 15:17:03,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:03,072 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, 1, 1, 1, 1] [2023-11-23 15:17:03,088 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 15:17:03,285 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 15:17:03,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:03,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash -439324746, now seen corresponding path program 1 times [2023-11-23 15:17:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:03,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330363798] [2023-11-23 15:17:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:03,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-23 15:17:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-23 15:17:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:03,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-23 15:17:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-23 15:17:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:03,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:03,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330363798] [2023-11-23 15:17:03,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330363798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:03,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281742094] [2023-11-23 15:17:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:03,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:03,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:03,520 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 15:17:03,592 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 15:17:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:04,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 15:17:04,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 15:17:04,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:17:04,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281742094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:04,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:17:04,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-23 15:17:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771970694] [2023-11-23 15:17:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:04,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:17:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:04,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:17:04,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:17:04,150 INFO L87 Difference]: Start difference. First operand 941 states and 1545 transitions. Second operand has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 15:17:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:04,970 INFO L93 Difference]: Finished difference Result 2657 states and 4339 transitions. [2023-11-23 15:17:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:17:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 344 [2023-11-23 15:17:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:04,976 INFO L225 Difference]: With dead ends: 2657 [2023-11-23 15:17:04,976 INFO L226 Difference]: Without dead ends: 2061 [2023-11-23 15:17:04,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:17:04,978 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 2308 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:04,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 5561 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 15:17:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2023-11-23 15:17:05,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1077. [2023-11-23 15:17:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1060 states have (on average 1.6358490566037736) internal successors, (1734), 1060 states have internal predecessors, (1734), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:17:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1764 transitions. [2023-11-23 15:17:05,008 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1764 transitions. Word has length 344 [2023-11-23 15:17:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:05,009 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1764 transitions. [2023-11-23 15:17:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 15:17:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1764 transitions. [2023-11-23 15:17:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-23 15:17:05,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:05,011 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, 1, 1, 1, 1] [2023-11-23 15:17:05,040 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 15:17:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:05,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:05,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1766144644, now seen corresponding path program 1 times [2023-11-23 15:17:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870325034] [2023-11-23 15:17:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-23 15:17:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-11-23 15:17:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-23 15:17:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-23 15:17:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:05,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870325034] [2023-11-23 15:17:05,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870325034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994067284] [2023-11-23 15:17:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:05,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:05,471 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 15:17:05,484 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 15:17:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:05,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 15:17:05,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:05,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994067284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:17:06,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:17:06,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2023-11-23 15:17:06,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109537725] [2023-11-23 15:17:06,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:17:06,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:17:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:17:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:17:06,673 INFO L87 Difference]: Start difference. First operand 1077 states and 1764 transitions. Second operand has 12 states, 12 states have (on average 51.583333333333336) internal successors, (619), 12 states have internal predecessors, (619), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 15:17:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:08,476 INFO L93 Difference]: Finished difference Result 2950 states and 4830 transitions. [2023-11-23 15:17:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:17:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 51.583333333333336) internal successors, (619), 12 states have internal predecessors, (619), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 344 [2023-11-23 15:17:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:08,490 INFO L225 Difference]: With dead ends: 2950 [2023-11-23 15:17:08,491 INFO L226 Difference]: Without dead ends: 1617 [2023-11-23 15:17:08,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:17:08,494 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 4070 mSDsluCounter, 7374 mSDsCounter, 0 mSdLazyCounter, 4299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 9056 SdHoareTripleChecker+Invalid, 4311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:08,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 9056 Invalid, 4311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4299 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 15:17:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2023-11-23 15:17:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1512. [2023-11-23 15:17:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1495 states have (on average 1.637458193979933) internal successors, (2448), 1495 states have internal predecessors, (2448), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:17:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2478 transitions. [2023-11-23 15:17:08,531 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2478 transitions. Word has length 344 [2023-11-23 15:17:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:08,531 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2478 transitions. [2023-11-23 15:17:08,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.583333333333336) internal successors, (619), 12 states have internal predecessors, (619), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 15:17:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2478 transitions. [2023-11-23 15:17:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-23 15:17:08,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:08,533 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, 1, 1, 1, 1] [2023-11-23 15:17:08,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 15:17:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:08,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:08,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash 72505550, now seen corresponding path program 1 times [2023-11-23 15:17:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971351803] [2023-11-23 15:17:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:08,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-23 15:17:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-23 15:17:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-23 15:17:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-11-23 15:17:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-11-23 15:17:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 15:17:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971351803] [2023-11-23 15:17:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971351803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918930041] [2023-11-23 15:17:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:09,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:09,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:09,076 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 15:17:09,077 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 15:17:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:09,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:17:09,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:17:09,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 15:17:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918930041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:17:09,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:17:09,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-23 15:17:09,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913453243] [2023-11-23 15:17:09,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:17:09,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:17:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:17:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:17:09,507 INFO L87 Difference]: Start difference. First operand 1512 states and 2478 transitions. Second operand has 9 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 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 15:17:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:09,662 INFO L93 Difference]: Finished difference Result 3033 states and 4974 transitions. [2023-11-23 15:17:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:17:09,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 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 348 [2023-11-23 15:17:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:09,676 INFO L225 Difference]: With dead ends: 3033 [2023-11-23 15:17:09,677 INFO L226 Difference]: Without dead ends: 1531 [2023-11-23 15:17:09,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 701 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 15:17:09,679 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 38 mSDsluCounter, 6975 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 8376 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:09,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 8376 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:17:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2023-11-23 15:17:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1528. [2023-11-23 15:17:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1511 states have (on average 1.6360026472534746) internal successors, (2472), 1511 states have internal predecessors, (2472), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:17:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2502 transitions. [2023-11-23 15:17:09,737 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2502 transitions. Word has length 348 [2023-11-23 15:17:09,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:09,737 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2502 transitions. [2023-11-23 15:17:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 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 15:17:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2502 transitions. [2023-11-23 15:17:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-23 15:17:09,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:09,739 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, 1, 1, 1] [2023-11-23 15:17:09,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 15:17:09,956 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,SelfDestructingSolverStorable9 [2023-11-23 15:17:09,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:09,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash -574708738, now seen corresponding path program 2 times [2023-11-23 15:17:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788655037] [2023-11-23 15:17:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-11-23 15:17:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-23 15:17:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-23 15:17:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-23 15:17:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:17:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 15:17:10,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788655037] [2023-11-23 15:17:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788655037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611165840] [2023-11-23 15:17:10,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:17:10,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:10,221 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 15:17:10,222 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 15:17:10,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:17:10,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:17:10,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 15:17:10,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 15:17:10,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:17:10,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611165840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:10,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:17:10,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-23 15:17:10,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915025606] [2023-11-23 15:17:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:10,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:17:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:17:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:17:10,632 INFO L87 Difference]: Start difference. First operand 1528 states and 2502 transitions. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 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 15:17:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:11,619 INFO L93 Difference]: Finished difference Result 4250 states and 6943 transitions. [2023-11-23 15:17:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:17:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 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 360 [2023-11-23 15:17:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:11,627 INFO L225 Difference]: With dead ends: 4250 [2023-11-23 15:17:11,627 INFO L226 Difference]: Without dead ends: 3087 [2023-11-23 15:17:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:17:11,629 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 2391 mSDsluCounter, 5477 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 7470 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 7470 Invalid, 1298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 15:17:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2023-11-23 15:17:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 1572. [2023-11-23 15:17:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1555 states have (on average 1.6308681672025724) internal successors, (2536), 1555 states have internal predecessors, (2536), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:17:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2566 transitions. [2023-11-23 15:17:11,665 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2566 transitions. Word has length 360 [2023-11-23 15:17:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:11,666 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2566 transitions. [2023-11-23 15:17:11,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 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 15:17:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2566 transitions. [2023-11-23 15:17:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-23 15:17:11,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:11,667 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, 1, 1, 1, 1] [2023-11-23 15:17:11,680 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 15:17:11,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:11,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:11,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1575997076, now seen corresponding path program 1 times [2023-11-23 15:17:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936326420] [2023-11-23 15:17:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-23 15:17:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-23 15:17:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-23 15:17:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-23 15:17:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:17:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 15:17:12,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:12,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936326420] [2023-11-23 15:17:12,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936326420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:12,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592515015] [2023-11-23 15:17:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:12,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:12,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:12,148 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 15:17:12,176 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 15:17:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:12,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 15:17:12,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 15:17:12,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 15:17:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592515015] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:17:12,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:17:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2023-11-23 15:17:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634754943] [2023-11-23 15:17:12,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:17:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 15:17:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 15:17:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:17:12,663 INFO L87 Difference]: Start difference. First operand 1572 states and 2566 transitions. Second operand has 15 states, 15 states have (on average 23.8) internal successors, (357), 15 states have internal predecessors, (357), 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 15:17:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:12,908 INFO L93 Difference]: Finished difference Result 3137 states and 5123 transitions. [2023-11-23 15:17:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:17:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.8) internal successors, (357), 15 states have internal predecessors, (357), 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 361 [2023-11-23 15:17:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:12,913 INFO L225 Difference]: With dead ends: 3137 [2023-11-23 15:17:12,913 INFO L226 Difference]: Without dead ends: 1579 [2023-11-23 15:17:12,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 722 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 15:17:12,915 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 30 mSDsluCounter, 15388 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 16794 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:12,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 16794 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:17:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-11-23 15:17:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1576. [2023-11-23 15:17:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1559 states have (on average 1.630532392559333) internal successors, (2542), 1559 states have internal predecessors, (2542), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:17:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2572 transitions. [2023-11-23 15:17:12,964 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2572 transitions. Word has length 361 [2023-11-23 15:17:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:12,964 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2572 transitions. [2023-11-23 15:17:12,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.8) internal successors, (357), 15 states have internal predecessors, (357), 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 15:17:12,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2572 transitions. [2023-11-23 15:17:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-23 15:17:12,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:12,966 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 15:17:12,981 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 15:17:13,176 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,SelfDestructingSolverStorable11 [2023-11-23 15:17:13,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:13,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1681978512, now seen corresponding path program 2 times [2023-11-23 15:17:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913288071] [2023-11-23 15:17:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:13,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:17:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:17:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-23 15:17:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-23 15:17:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:13,405 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 15:17:13,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913288071] [2023-11-23 15:17:13,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913288071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:13,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104430485] [2023-11-23 15:17:13,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:17:13,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:13,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:13,429 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 15:17:13,481 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 15:17:13,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:17:13,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:17:13,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 15:17:13,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:14,109 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 15:17:14,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:17:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104430485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:17:14,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-23 15:17:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802809546] [2023-11-23 15:17:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:17:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:17:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:17:14,111 INFO L87 Difference]: Start difference. First operand 1576 states and 2572 transitions. Second operand has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 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 15:17:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:15,550 INFO L93 Difference]: Finished difference Result 4000 states and 6515 transitions. [2023-11-23 15:17:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:17:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 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 364 [2023-11-23 15:17:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:15,570 INFO L225 Difference]: With dead ends: 4000 [2023-11-23 15:17:15,575 INFO L226 Difference]: Without dead ends: 2793 [2023-11-23 15:17:15,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:17:15,577 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 2702 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2707 Valid, 4654 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 15:17:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-11-23 15:17:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 1584. [2023-11-23 15:17:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1567 states have (on average 1.6273133375877473) internal successors, (2550), 1567 states have internal predecessors, (2550), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:17:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2580 transitions. [2023-11-23 15:17:15,635 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2580 transitions. Word has length 364 [2023-11-23 15:17:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:15,636 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2580 transitions. [2023-11-23 15:17:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 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 15:17:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2580 transitions. [2023-11-23 15:17:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-23 15:17:15,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:15,640 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 15:17:15,671 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 15:17:15,858 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,SelfDestructingSolverStorable12 [2023-11-23 15:17:15,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:15,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:15,858 INFO L85 PathProgramCache]: Analyzing trace with hash 603453128, now seen corresponding path program 1 times [2023-11-23 15:17:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:15,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761507388] [2023-11-23 15:17:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:15,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:17:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:17:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-23 15:17:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-23 15:17:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,117 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 15:17:16,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:16,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761507388] [2023-11-23 15:17:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761507388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:16,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517931604] [2023-11-23 15:17:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:16,118 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 15:17:16,157 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 15:17:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:16,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 160 conjunts are in the unsatisfiable core [2023-11-23 15:17:16,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 15:17:18,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:18,439 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 15:17:18,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517931604] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:18,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:17:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 19] total 32 [2023-11-23 15:17:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077737800] [2023-11-23 15:17:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:18,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:17:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:18,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:17:18,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2023-11-23 15:17:18,442 INFO L87 Difference]: Start difference. First operand 1584 states and 2580 transitions. Second operand has 12 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 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 15:17:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:24,525 INFO L93 Difference]: Finished difference Result 10246 states and 16611 transitions. [2023-11-23 15:17:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 15:17:24,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 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 15:17:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:24,538 INFO L225 Difference]: With dead ends: 10246 [2023-11-23 15:17:24,538 INFO L226 Difference]: Without dead ends: 8140 [2023-11-23 15:17:24,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=629, Invalid=4921, Unknown=0, NotChecked=0, Total=5550 [2023-11-23 15:17:24,543 INFO L413 NwaCegarLoop]: 2283 mSDtfsCounter, 9284 mSDsluCounter, 17350 mSDsCounter, 0 mSdLazyCounter, 7739 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9300 SdHoareTripleChecker+Valid, 19633 SdHoareTripleChecker+Invalid, 7834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 7739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:24,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9300 Valid, 19633 Invalid, 7834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 7739 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-23 15:17:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2023-11-23 15:17:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 1735. [2023-11-23 15:17:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1713 states have (on average 1.6217162872154116) internal successors, (2778), 1713 states have internal predecessors, (2778), 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 15:17:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2818 transitions. [2023-11-23 15:17:24,629 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2818 transitions. Word has length 365 [2023-11-23 15:17:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:24,630 INFO L495 AbstractCegarLoop]: Abstraction has 1735 states and 2818 transitions. [2023-11-23 15:17:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 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 15:17:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2818 transitions. [2023-11-23 15:17:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-23 15:17:24,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:24,632 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 15:17:24,645 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 15:17:24,845 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,SelfDestructingSolverStorable13 [2023-11-23 15:17:24,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:24,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash -357350102, now seen corresponding path program 1 times [2023-11-23 15:17:24,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:24,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882517654] [2023-11-23 15:17:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:24,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:17:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:17:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-23 15:17:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-23 15:17:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,159 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 15:17:25,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:25,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882517654] [2023-11-23 15:17:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882517654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:25,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949272795] [2023-11-23 15:17:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:25,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:25,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:25,160 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 15:17:25,171 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 15:17:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:25,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 15:17:25,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:26,068 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 15:17:26,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:26,301 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 15:17:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949272795] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:26,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:17:26,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 6] total 17 [2023-11-23 15:17:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596467253] [2023-11-23 15:17:26,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:17:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:17:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-23 15:17:26,304 INFO L87 Difference]: Start difference. First operand 1735 states and 2818 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 15:17:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:28,492 INFO L93 Difference]: Finished difference Result 5555 states and 8997 transitions. [2023-11-23 15:17:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:17:28,492 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 15:17:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:28,521 INFO L225 Difference]: With dead ends: 5555 [2023-11-23 15:17:28,521 INFO L226 Difference]: Without dead ends: 4324 [2023-11-23 15:17:28,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-11-23 15:17:28,526 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 5577 mSDsluCounter, 7517 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5582 SdHoareTripleChecker+Valid, 9217 SdHoareTripleChecker+Invalid, 4689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:28,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5582 Valid, 9217 Invalid, 4689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4663 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 15:17:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2023-11-23 15:17:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 3007. [2023-11-23 15:17:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 2967 states have (on average 1.6181327940680823) internal successors, (4801), 2967 states have internal predecessors, (4801), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 15:17:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4877 transitions. [2023-11-23 15:17:28,605 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4877 transitions. Word has length 366 [2023-11-23 15:17:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:28,605 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4877 transitions. [2023-11-23 15:17:28,605 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 15:17:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4877 transitions. [2023-11-23 15:17:28,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-23 15:17:28,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:28,607 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 15:17:28,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 15:17:28,820 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,SelfDestructingSolverStorable14 [2023-11-23 15:17:28,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:28,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1090628874, now seen corresponding path program 1 times [2023-11-23 15:17:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084913164] [2023-11-23 15:17:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:28,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:17:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:17:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-23 15:17:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-23 15:17:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,066 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 15:17:29,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084913164] [2023-11-23 15:17:29,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084913164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607720459] [2023-11-23 15:17:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:29,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:29,068 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 15:17:29,069 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 15:17:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:29,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 148 conjunts are in the unsatisfiable core [2023-11-23 15:17:29,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:30,711 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 15:17:30,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:31,313 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 15:17:31,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607720459] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:31,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:17:31,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 13] total 31 [2023-11-23 15:17:31,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280058521] [2023-11-23 15:17:31,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:31,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 15:17:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 15:17:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-11-23 15:17:31,334 INFO L87 Difference]: Start difference. First operand 3007 states and 4877 transitions. Second operand has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 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 15:17:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:44,892 INFO L93 Difference]: Finished difference Result 37625 states and 60802 transitions. [2023-11-23 15:17:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-11-23 15:17:44,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 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 15:17:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:44,959 INFO L225 Difference]: With dead ends: 37625 [2023-11-23 15:17:44,959 INFO L226 Difference]: Without dead ends: 33365 [2023-11-23 15:17:44,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5518 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2365, Invalid=13637, Unknown=0, NotChecked=0, Total=16002 [2023-11-23 15:17:44,971 INFO L413 NwaCegarLoop]: 1992 mSDtfsCounter, 18470 mSDsluCounter, 24666 mSDsCounter, 0 mSdLazyCounter, 12452 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18478 SdHoareTripleChecker+Valid, 26658 SdHoareTripleChecker+Invalid, 12617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 12452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:44,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18478 Valid, 26658 Invalid, 12617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [165 Valid, 12452 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-23 15:17:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33365 states. [2023-11-23 15:17:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33365 to 3420. [2023-11-23 15:17:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3350 states have (on average 1.6122388059701493) internal successors, (5401), 3350 states have internal predecessors, (5401), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-23 15:17:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 5537 transitions. [2023-11-23 15:17:45,201 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 5537 transitions. Word has length 366 [2023-11-23 15:17:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:45,202 INFO L495 AbstractCegarLoop]: Abstraction has 3420 states and 5537 transitions. [2023-11-23 15:17:45,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 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 15:17:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 5537 transitions. [2023-11-23 15:17:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-23 15:17:45,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:45,204 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 15:17:45,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-23 15:17:45,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:45,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1247620880, now seen corresponding path program 1 times [2023-11-23 15:17:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956436649] [2023-11-23 15:17:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:17:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:17:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:17:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-11-23 15:17:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:45,616 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 15:17:45,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:45,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956436649] [2023-11-23 15:17:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956436649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:45,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101722850] [2023-11-23 15:17:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:45,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:45,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:45,618 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 15:17:45,618 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 15:17:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:46,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-23 15:17:46,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 15:17:47,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:47,923 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 15:17:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101722850] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:17:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [4, 14] total 28 [2023-11-23 15:17:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494573651] [2023-11-23 15:17:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:17:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:17:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2023-11-23 15:17:47,926 INFO L87 Difference]: Start difference. First operand 3420 states and 5537 transitions. Second operand has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 15:17:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:49,242 INFO L93 Difference]: Finished difference Result 6222 states and 10060 transitions. [2023-11-23 15:17:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:17:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 367 [2023-11-23 15:17:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:49,247 INFO L225 Difference]: With dead ends: 6222 [2023-11-23 15:17:49,248 INFO L226 Difference]: Without dead ends: 3454 [2023-11-23 15:17:49,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-23 15:17:49,250 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 10591 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10594 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:49,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10594 Valid, 3076 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:17:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2023-11-23 15:17:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3424. [2023-11-23 15:17:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3354 states have (on average 1.610912343470483) internal successors, (5403), 3354 states have internal predecessors, (5403), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-23 15:17:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 5539 transitions. [2023-11-23 15:17:49,371 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 5539 transitions. Word has length 367 [2023-11-23 15:17:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:49,371 INFO L495 AbstractCegarLoop]: Abstraction has 3424 states and 5539 transitions. [2023-11-23 15:17:49,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 15:17:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 5539 transitions. [2023-11-23 15:17:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-11-23 15:17:49,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:49,374 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 15:17:49,388 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 15:17:49,588 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,SelfDestructingSolverStorable16 [2023-11-23 15:17:49,588 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:49,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2012175040, now seen corresponding path program 1 times [2023-11-23 15:17:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:49,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793746574] [2023-11-23 15:17:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-23 15:17:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-23 15:17:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-23 15:17:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-23 15:17:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-23 15:17:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:49,776 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 15:17:49,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793746574] [2023-11-23 15:17:49,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793746574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:17:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413159822] [2023-11-23 15:17:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:49,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:17:49,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:17:49,778 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 15:17:49,780 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 15:17:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:50,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 15:17:50,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:17:50,247 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 15:17:50,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:17:51,138 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 15:17:51,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413159822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:17:51,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:17:51,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 11] total 16 [2023-11-23 15:17:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177973601] [2023-11-23 15:17:51,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:17:51,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 15:17:51,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 15:17:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:17:51,141 INFO L87 Difference]: Start difference. First operand 3424 states and 5539 transitions. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 15:17:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:53,111 INFO L93 Difference]: Finished difference Result 6832 states and 11053 transitions. [2023-11-23 15:17:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:17:53,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 368 [2023-11-23 15:17:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:53,116 INFO L225 Difference]: With dead ends: 6832 [2023-11-23 15:17:53,116 INFO L226 Difference]: Without dead ends: 3390 [2023-11-23 15:17:53,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-23 15:17:53,119 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 2248 mSDsluCounter, 5438 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 6348 SdHoareTripleChecker+Invalid, 4507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:53,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 6348 Invalid, 4507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4498 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 15:17:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2023-11-23 15:17:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 3381. [2023-11-23 15:17:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3314 states have (on average 1.608328304164152) internal successors, (5330), 3314 states have internal predecessors, (5330), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-23 15:17:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 5460 transitions. [2023-11-23 15:17:53,240 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 5460 transitions. Word has length 368 [2023-11-23 15:17:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:53,241 INFO L495 AbstractCegarLoop]: Abstraction has 3381 states and 5460 transitions. [2023-11-23 15:17:53,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 15:17:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 5460 transitions. [2023-11-23 15:17:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-11-23 15:17:53,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:53,243 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] [2023-11-23 15:17:53,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 15:17:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 15:17:53,457 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:53,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2001545641, now seen corresponding path program 1 times [2023-11-23 15:17:53,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:53,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199421800] [2023-11-23 15:17:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:17:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:17:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:17:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:17:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:53,721 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 15:17:53,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199421800] [2023-11-23 15:17:53,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199421800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:53,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:53,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 15:17:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032440693] [2023-11-23 15:17:53,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:17:53,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:17:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:17:53,724 INFO L87 Difference]: Start difference. First operand 3381 states and 5460 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 15:17:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:53,888 INFO L93 Difference]: Finished difference Result 6153 states and 9934 transitions. [2023-11-23 15:17:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:17:53,889 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 371 [2023-11-23 15:17:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:53,892 INFO L225 Difference]: With dead ends: 6153 [2023-11-23 15:17:53,892 INFO L226 Difference]: Without dead ends: 3393 [2023-11-23 15:17:53,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:17:53,894 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 1 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:17:53,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4169 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:17:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2023-11-23 15:17:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3389. [2023-11-23 15:17:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 3322 states have (on average 1.6068633353401565) internal successors, (5338), 3322 states have internal predecessors, (5338), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-23 15:17:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5468 transitions. [2023-11-23 15:17:54,078 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5468 transitions. Word has length 371 [2023-11-23 15:17:54,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:54,078 INFO L495 AbstractCegarLoop]: Abstraction has 3389 states and 5468 transitions. [2023-11-23 15:17:54,078 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 15:17:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5468 transitions. [2023-11-23 15:17:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-11-23 15:17:54,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:54,081 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] [2023-11-23 15:17:54,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 15:17:54,081 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:54,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash -353795971, now seen corresponding path program 1 times [2023-11-23 15:17:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:54,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522283142] [2023-11-23 15:17:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:17:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:17:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:17:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:17:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:54,904 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 15:17:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:54,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522283142] [2023-11-23 15:17:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522283142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:54,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:54,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:17:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783627127] [2023-11-23 15:17:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:54,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:17:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:17:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:17:54,906 INFO L87 Difference]: Start difference. First operand 3389 states and 5468 transitions. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 8977 states and 14485 transitions. [2023-11-23 15:17:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:17:55,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 372 [2023-11-23 15:17:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:55,246 INFO L225 Difference]: With dead ends: 8977 [2023-11-23 15:17:55,246 INFO L226 Difference]: Without dead ends: 6209 [2023-11-23 15:17:55,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:17:55,249 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1675 mSDsluCounter, 4373 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 5953 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 15:17:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 5953 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:17:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2023-11-23 15:17:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 3421. [2023-11-23 15:17:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 3354 states have (on average 1.6058437686344662) internal successors, (5386), 3354 states have internal predecessors, (5386), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-23 15:17:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 5516 transitions. [2023-11-23 15:17:55,397 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 5516 transitions. Word has length 372 [2023-11-23 15:17:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:55,397 INFO L495 AbstractCegarLoop]: Abstraction has 3421 states and 5516 transitions. [2023-11-23 15:17:55,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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 15:17:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 5516 transitions. [2023-11-23 15:17:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-23 15:17:55,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:55,400 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 15:17:55,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 15:17:55,400 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:55,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1806522111, now seen corresponding path program 1 times [2023-11-23 15:17:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:55,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609089426] [2023-11-23 15:17:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:55,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:17:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:17:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:17:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:17:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:56,252 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 15:17:56,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:56,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609089426] [2023-11-23 15:17:56,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609089426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:56,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:56,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 15:17:56,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088319909] [2023-11-23 15:17:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:56,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:17:56,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:17:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:17:56,254 INFO L87 Difference]: Start difference. First operand 3421 states and 5516 transitions. Second operand has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 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 15:17:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:56,702 INFO L93 Difference]: Finished difference Result 8113 states and 13054 transitions. [2023-11-23 15:17:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:17:56,703 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), 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 15:17:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:56,708 INFO L225 Difference]: With dead ends: 8113 [2023-11-23 15:17:56,708 INFO L226 Difference]: Without dead ends: 5313 [2023-11-23 15:17:56,710 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 15:17:56,711 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 4578 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 5693 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 15:17:56,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4583 Valid, 5693 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:17:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2023-11-23 15:17:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 3545. [2023-11-23 15:17:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 3474 states have (on average 1.6016119746689694) internal successors, (5564), 3474 states have internal predecessors, (5564), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:17:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5702 transitions. [2023-11-23 15:17:56,868 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5702 transitions. Word has length 373 [2023-11-23 15:17:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:56,869 INFO L495 AbstractCegarLoop]: Abstraction has 3545 states and 5702 transitions. [2023-11-23 15:17:56,870 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), 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 15:17:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5702 transitions. [2023-11-23 15:17:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-11-23 15:17:56,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:56,877 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] [2023-11-23 15:17:56,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 15:17:56,877 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash 933245194, now seen corresponding path program 1 times [2023-11-23 15:17:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645590725] [2023-11-23 15:17:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:17:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:17:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:17:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:17:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2023-11-23 15:17:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-23 15:17:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-11-23 15:17:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:17:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:17:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:17:57,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:57,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645590725] [2023-11-23 15:17:57,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645590725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:57,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:57,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 15:17:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985303079] [2023-11-23 15:17:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:57,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:17:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:17:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:17:57,881 INFO L87 Difference]: Start difference. First operand 3545 states and 5702 transitions. Second operand has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 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 15:17:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:17:58,201 INFO L93 Difference]: Finished difference Result 9149 states and 14735 transitions. [2023-11-23 15:17:58,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 15:17:58,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 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 753 [2023-11-23 15:17:58,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:17:58,209 INFO L225 Difference]: With dead ends: 9149 [2023-11-23 15:17:58,209 INFO L226 Difference]: Without dead ends: 6349 [2023-11-23 15:17:58,212 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 15:17:58,213 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 834 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 4610 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 15:17:58,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 4610 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:17:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2023-11-23 15:17:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 3553. [2023-11-23 15:17:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3482 states have (on average 1.6002297530155083) internal successors, (5572), 3482 states have internal predecessors, (5572), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:17:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5710 transitions. [2023-11-23 15:17:58,423 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5710 transitions. Word has length 753 [2023-11-23 15:17:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:17:58,424 INFO L495 AbstractCegarLoop]: Abstraction has 3553 states and 5710 transitions. [2023-11-23 15:17:58,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 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 15:17:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5710 transitions. [2023-11-23 15:17:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-11-23 15:17:58,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:17:58,431 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] [2023-11-23 15:17:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 15:17:58,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:17:58,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:17:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash -873186484, now seen corresponding path program 1 times [2023-11-23 15:17:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:17:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196683429] [2023-11-23 15:17:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:17:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:17:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:17:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:17:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:17:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:17:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:17:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2023-11-23 15:17:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-23 15:17:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-11-23 15:17:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:17:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:17:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:17:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:17:59,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:17:59,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196683429] [2023-11-23 15:17:59,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196683429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:17:59,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:17:59,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:17:59,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050797678] [2023-11-23 15:17:59,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:17:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:17:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:17:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:17:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:17:59,289 INFO L87 Difference]: Start difference. First operand 3553 states and 5710 transitions. Second operand has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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 15:18:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:00,121 INFO L93 Difference]: Finished difference Result 6361 states and 10232 transitions. [2023-11-23 15:18:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:18:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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 753 [2023-11-23 15:18:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:00,124 INFO L225 Difference]: With dead ends: 6361 [2023-11-23 15:18:00,125 INFO L226 Difference]: Without dead ends: 3553 [2023-11-23 15:18:00,127 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 15:18:00,127 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 2345 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:00,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 1674 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 15:18:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2023-11-23 15:18:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3553. [2023-11-23 15:18:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3482 states have (on average 1.5990809879379666) internal successors, (5568), 3482 states have internal predecessors, (5568), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5706 transitions. [2023-11-23 15:18:00,284 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5706 transitions. Word has length 753 [2023-11-23 15:18:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:00,285 INFO L495 AbstractCegarLoop]: Abstraction has 3553 states and 5706 transitions. [2023-11-23 15:18:00,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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 15:18:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5706 transitions. [2023-11-23 15:18:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2023-11-23 15:18:00,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:00,292 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] [2023-11-23 15:18:00,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 15:18:00,292 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:00,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash -695743201, now seen corresponding path program 1 times [2023-11-23 15:18:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:00,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256431991] [2023-11-23 15:18:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:00,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2023-11-23 15:18:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2023-11-23 15:18:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-23 15:18:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-23 15:18:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-23 15:18:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:18:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256431991] [2023-11-23 15:18:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256431991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:18:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:18:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464043999] [2023-11-23 15:18:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:01,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:18:01,001 INFO L87 Difference]: Start difference. First operand 3553 states and 5706 transitions. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 15:18:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:01,183 INFO L93 Difference]: Finished difference Result 6365 states and 10232 transitions. [2023-11-23 15:18:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 754 [2023-11-23 15:18:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:01,187 INFO L225 Difference]: With dead ends: 6365 [2023-11-23 15:18:01,187 INFO L226 Difference]: Without dead ends: 3557 [2023-11-23 15:18:01,189 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 15:18:01,190 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 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 15:18:01,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2023-11-23 15:18:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2023-11-23 15:18:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3486 states have (on average 1.5983935742971886) internal successors, (5572), 3486 states have internal predecessors, (5572), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5710 transitions. [2023-11-23 15:18:01,352 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5710 transitions. Word has length 754 [2023-11-23 15:18:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 3557 states and 5710 transitions. [2023-11-23 15:18:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 15:18:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5710 transitions. [2023-11-23 15:18:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-23 15:18:01,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:01,359 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] [2023-11-23 15:18:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 15:18:01,359 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:01,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1312332438, now seen corresponding path program 1 times [2023-11-23 15:18:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536379774] [2023-11-23 15:18:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:01,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2023-11-23 15:18:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-11-23 15:18:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-23 15:18:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-23 15:18:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:18:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:18:02,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:02,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536379774] [2023-11-23 15:18:02,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536379774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:02,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863616054] [2023-11-23 15:18:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:02,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:02,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:02,169 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 15:18:02,232 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 15:18:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:03,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 4023 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 15:18:03,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 15:18:03,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:18:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863616054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:03,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:18:03,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:18:03,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796543778] [2023-11-23 15:18:03,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:03,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:18:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:18:03,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:18:03,781 INFO L87 Difference]: Start difference. First operand 3557 states and 5710 transitions. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 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 15:18:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:04,566 INFO L93 Difference]: Finished difference Result 6369 states and 10232 transitions. [2023-11-23 15:18:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:18:04,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 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 755 [2023-11-23 15:18:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:04,570 INFO L225 Difference]: With dead ends: 6369 [2023-11-23 15:18:04,570 INFO L226 Difference]: Without dead ends: 3557 [2023-11-23 15:18:04,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 774 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 15:18:04,576 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1054 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:04,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 1674 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 15:18:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2023-11-23 15:18:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2023-11-23 15:18:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3486 states have (on average 1.5972461273666092) internal successors, (5568), 3486 states have internal predecessors, (5568), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5706 transitions. [2023-11-23 15:18:04,734 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5706 transitions. Word has length 755 [2023-11-23 15:18:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:04,734 INFO L495 AbstractCegarLoop]: Abstraction has 3557 states and 5706 transitions. [2023-11-23 15:18:04,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 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 15:18:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5706 transitions. [2023-11-23 15:18:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-23 15:18:04,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:04,741 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] [2023-11-23 15:18:04,758 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 15:18:04,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:04,959 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:04,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -353528684, now seen corresponding path program 1 times [2023-11-23 15:18:04,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:04,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030116098] [2023-11-23 15:18:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2023-11-23 15:18:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-11-23 15:18:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-23 15:18:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-23 15:18:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:18:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 15:18:05,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:05,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030116098] [2023-11-23 15:18:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030116098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:05,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299473230] [2023-11-23 15:18:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:05,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:05,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:05,642 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 15:18:05,676 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 15:18:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:06,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 4022 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:18:06,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 15:18:06,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 15:18:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299473230] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:06,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983697173] [2023-11-23 15:18:06,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:06,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:06,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:06,537 INFO L87 Difference]: Start difference. First operand 3557 states and 5706 transitions. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 15:18:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:06,725 INFO L93 Difference]: Finished difference Result 6373 states and 10232 transitions. [2023-11-23 15:18:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 755 [2023-11-23 15:18:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:06,729 INFO L225 Difference]: With dead ends: 6373 [2023-11-23 15:18:06,729 INFO L226 Difference]: Without dead ends: 3561 [2023-11-23 15:18:06,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1527 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 15:18:06,732 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:06,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2023-11-23 15:18:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3561. [2023-11-23 15:18:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3490 states have (on average 1.5965616045845272) internal successors, (5572), 3490 states have internal predecessors, (5572), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5710 transitions. [2023-11-23 15:18:06,894 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5710 transitions. Word has length 755 [2023-11-23 15:18:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:06,894 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5710 transitions. [2023-11-23 15:18:06,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 15:18:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5710 transitions. [2023-11-23 15:18:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-23 15:18:06,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:06,901 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] [2023-11-23 15:18:06,917 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 15:18:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:07,117 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:07,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1013346657, now seen corresponding path program 1 times [2023-11-23 15:18:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:07,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929973375] [2023-11-23 15:18:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:07,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-11-23 15:18:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2023-11-23 15:18:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-23 15:18:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-23 15:18:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:18:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 15:18:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929973375] [2023-11-23 15:18:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929973375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951484687] [2023-11-23 15:18:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:07,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:07,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:07,828 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 15:18:07,853 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 15:18:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:08,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:18:08,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 15:18:08,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-23 15:18:08,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951484687] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:08,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:08,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:08,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277456732] [2023-11-23 15:18:08,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:08,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:08,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:08,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:08,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:08,719 INFO L87 Difference]: Start difference. First operand 3561 states and 5710 transitions. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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 15:18:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:08,911 INFO L93 Difference]: Finished difference Result 6381 states and 10240 transitions. [2023-11-23 15:18:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:08,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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 756 [2023-11-23 15:18:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:08,915 INFO L225 Difference]: With dead ends: 6381 [2023-11-23 15:18:08,915 INFO L226 Difference]: Without dead ends: 3565 [2023-11-23 15:18:08,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1529 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 15:18:08,918 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:08,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2023-11-23 15:18:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3565. [2023-11-23 15:18:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3494 states have (on average 1.5958786491127648) internal successors, (5576), 3494 states have internal predecessors, (5576), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5714 transitions. [2023-11-23 15:18:09,085 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 5714 transitions. Word has length 756 [2023-11-23 15:18:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:09,085 INFO L495 AbstractCegarLoop]: Abstraction has 3565 states and 5714 transitions. [2023-11-23 15:18:09,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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 15:18:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 5714 transitions. [2023-11-23 15:18:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2023-11-23 15:18:09,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:09,092 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] [2023-11-23 15:18:09,126 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 15:18:09,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:09,305 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:09,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash 956966417, now seen corresponding path program 1 times [2023-11-23 15:18:09,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:09,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820659004] [2023-11-23 15:18:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-23 15:18:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2023-11-23 15:18:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-23 15:18:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-23 15:18:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-11-23 15:18:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-23 15:18:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820659004] [2023-11-23 15:18:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820659004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543501906] [2023-11-23 15:18:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:09,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:09,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:09,983 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 15:18:10,029 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 15:18:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:10,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:18:10,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 15:18:10,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 15:18:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543501906] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:10,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559131471] [2023-11-23 15:18:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:10,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:10,879 INFO L87 Difference]: Start difference. First operand 3565 states and 5714 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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 15:18:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:11,072 INFO L93 Difference]: Finished difference Result 6389 states and 10248 transitions. [2023-11-23 15:18:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:11,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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 757 [2023-11-23 15:18:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:11,076 INFO L225 Difference]: With dead ends: 6389 [2023-11-23 15:18:11,076 INFO L226 Difference]: Without dead ends: 3569 [2023-11-23 15:18:11,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1531 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 15:18:11,079 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:11,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2023-11-23 15:18:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3569. [2023-11-23 15:18:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3498 states have (on average 1.5951972555746141) internal successors, (5580), 3498 states have internal predecessors, (5580), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 5718 transitions. [2023-11-23 15:18:11,249 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 5718 transitions. Word has length 757 [2023-11-23 15:18:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:11,250 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 5718 transitions. [2023-11-23 15:18:11,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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 15:18:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 5718 transitions. [2023-11-23 15:18:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-11-23 15:18:11,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:11,256 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] [2023-11-23 15:18:11,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-23 15:18:11,471 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,SelfDestructingSolverStorable27 [2023-11-23 15:18:11,472 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:11,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1657374121, now seen corresponding path program 1 times [2023-11-23 15:18:11,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:11,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584681015] [2023-11-23 15:18:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2023-11-23 15:18:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-23 15:18:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:18:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:18:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2023-11-23 15:18:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 15:18:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584681015] [2023-11-23 15:18:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584681015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944373768] [2023-11-23 15:18:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:12,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:12,248 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 15:18:12,296 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 15:18:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:13,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 4043 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:18:13,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-23 15:18:13,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-23 15:18:13,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944373768] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:13,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:13,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:13,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668269893] [2023-11-23 15:18:13,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:13,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:13,168 INFO L87 Difference]: Start difference. First operand 3569 states and 5718 transitions. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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 15:18:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:13,366 INFO L93 Difference]: Finished difference Result 6397 states and 10256 transitions. [2023-11-23 15:18:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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 758 [2023-11-23 15:18:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:13,370 INFO L225 Difference]: With dead ends: 6397 [2023-11-23 15:18:13,370 INFO L226 Difference]: Without dead ends: 3573 [2023-11-23 15:18:13,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1533 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 15:18:13,375 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:13,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2023-11-23 15:18:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3573. [2023-11-23 15:18:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 3502 states have (on average 1.5945174186179325) internal successors, (5584), 3502 states have internal predecessors, (5584), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 5722 transitions. [2023-11-23 15:18:13,552 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 5722 transitions. Word has length 758 [2023-11-23 15:18:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:13,553 INFO L495 AbstractCegarLoop]: Abstraction has 3573 states and 5722 transitions. [2023-11-23 15:18:13,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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 15:18:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 5722 transitions. [2023-11-23 15:18:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-11-23 15:18:13,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:13,559 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 15:18:13,580 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 15:18:13,780 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,SelfDestructingSolverStorable28 [2023-11-23 15:18:13,780 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:13,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -386477841, now seen corresponding path program 1 times [2023-11-23 15:18:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:13,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855745833] [2023-11-23 15:18:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:13,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2023-11-23 15:18:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-23 15:18:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-23 15:18:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-23 15:18:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:18:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-23 15:18:14,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:14,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855745833] [2023-11-23 15:18:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855745833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:14,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032306840] [2023-11-23 15:18:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:14,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:14,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:14,455 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 15:18:14,460 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 15:18:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:15,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 4050 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:15,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 15:18:15,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 15:18:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032306840] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56657032] [2023-11-23 15:18:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:15,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:15,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:15,349 INFO L87 Difference]: Start difference. First operand 3573 states and 5722 transitions. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 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 15:18:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:15,551 INFO L93 Difference]: Finished difference Result 6405 states and 10264 transitions. [2023-11-23 15:18:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 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 15:18:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:15,555 INFO L225 Difference]: With dead ends: 6405 [2023-11-23 15:18:15,555 INFO L226 Difference]: Without dead ends: 3577 [2023-11-23 15:18:15,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1535 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 15:18:15,558 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:15,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2023-11-23 15:18:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3577. [2023-11-23 15:18:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3506 states have (on average 1.5938391329150028) internal successors, (5588), 3506 states have internal predecessors, (5588), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5726 transitions. [2023-11-23 15:18:15,735 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5726 transitions. Word has length 759 [2023-11-23 15:18:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:15,736 INFO L495 AbstractCegarLoop]: Abstraction has 3577 states and 5726 transitions. [2023-11-23 15:18:15,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 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 15:18:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5726 transitions. [2023-11-23 15:18:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-11-23 15:18:15,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:15,742 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 15:18:15,759 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 15:18:15,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:15,948 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:15,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash -500570465, now seen corresponding path program 1 times [2023-11-23 15:18:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:15,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761056674] [2023-11-23 15:18:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:15,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-11-23 15:18:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:18:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-23 15:18:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:18:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-23 15:18:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 15:18:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761056674] [2023-11-23 15:18:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761056674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028456181] [2023-11-23 15:18:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:16,629 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 15:18:16,638 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 15:18:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:17,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:17,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-23 15:18:17,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-23 15:18:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028456181] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398832911] [2023-11-23 15:18:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:17,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:17,530 INFO L87 Difference]: Start difference. First operand 3577 states and 5726 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 15:18:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:17,737 INFO L93 Difference]: Finished difference Result 6413 states and 10272 transitions. [2023-11-23 15:18:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:17,738 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 15:18:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:17,741 INFO L225 Difference]: With dead ends: 6413 [2023-11-23 15:18:17,741 INFO L226 Difference]: Without dead ends: 3581 [2023-11-23 15:18:17,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1537 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 15:18:17,744 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:17,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2023-11-23 15:18:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3581. [2023-11-23 15:18:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3510 states have (on average 1.593162393162393) internal successors, (5592), 3510 states have internal predecessors, (5592), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5730 transitions. [2023-11-23 15:18:17,927 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5730 transitions. Word has length 760 [2023-11-23 15:18:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:17,927 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 5730 transitions. [2023-11-23 15:18:17,928 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 15:18:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5730 transitions. [2023-11-23 15:18:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-11-23 15:18:17,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:17,933 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 15:18:17,952 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 15:18:18,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:18,135 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:18,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1403977695, now seen corresponding path program 1 times [2023-11-23 15:18:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:18,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200499628] [2023-11-23 15:18:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:18,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2023-11-23 15:18:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2023-11-23 15:18:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-23 15:18:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:18:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-23 15:18:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-23 15:18:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200499628] [2023-11-23 15:18:18,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200499628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880449130] [2023-11-23 15:18:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:18,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:18,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:18,804 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 15:18:18,855 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 15:18:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:19,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:19,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 15:18:19,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 15:18:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880449130] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871063679] [2023-11-23 15:18:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:19,752 INFO L87 Difference]: Start difference. First operand 3581 states and 5730 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 15:18:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:20,016 INFO L93 Difference]: Finished difference Result 6421 states and 10280 transitions. [2023-11-23 15:18:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:20,017 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 15:18:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:20,020 INFO L225 Difference]: With dead ends: 6421 [2023-11-23 15:18:20,020 INFO L226 Difference]: Without dead ends: 3585 [2023-11-23 15:18:20,021 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 15:18:20,022 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:20,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2023-11-23 15:18:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3585. [2023-11-23 15:18:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3514 states have (on average 1.5924871940808196) internal successors, (5596), 3514 states have internal predecessors, (5596), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 5734 transitions. [2023-11-23 15:18:20,203 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 5734 transitions. Word has length 761 [2023-11-23 15:18:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:20,203 INFO L495 AbstractCegarLoop]: Abstraction has 3585 states and 5734 transitions. [2023-11-23 15:18:20,203 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 15:18:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 5734 transitions. [2023-11-23 15:18:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-11-23 15:18:20,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:20,209 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 15:18:20,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-23 15:18:20,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:20,410 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:20,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:20,410 INFO L85 PathProgramCache]: Analyzing trace with hash 975008124, now seen corresponding path program 1 times [2023-11-23 15:18:20,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:20,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637740867] [2023-11-23 15:18:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2023-11-23 15:18:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2023-11-23 15:18:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:18:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-23 15:18:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:18:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 15:18:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637740867] [2023-11-23 15:18:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637740867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039970384] [2023-11-23 15:18:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:21,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:21,053 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 15:18:21,055 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 15:18:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:21,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:21,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-23 15:18:21,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 15:18:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039970384] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492449141] [2023-11-23 15:18:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:21,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:21,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:21,952 INFO L87 Difference]: Start difference. First operand 3585 states and 5734 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 15:18:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:22,201 INFO L93 Difference]: Finished difference Result 6429 states and 10288 transitions. [2023-11-23 15:18:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:22,202 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 15:18:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:22,204 INFO L225 Difference]: With dead ends: 6429 [2023-11-23 15:18:22,204 INFO L226 Difference]: Without dead ends: 3589 [2023-11-23 15:18:22,205 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 15:18:22,206 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:22,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2023-11-23 15:18:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3589. [2023-11-23 15:18:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3518 states have (on average 1.5918135304150085) internal successors, (5600), 3518 states have internal predecessors, (5600), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5738 transitions. [2023-11-23 15:18:22,392 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5738 transitions. Word has length 762 [2023-11-23 15:18:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:22,393 INFO L495 AbstractCegarLoop]: Abstraction has 3589 states and 5738 transitions. [2023-11-23 15:18:22,393 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 15:18:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5738 transitions. [2023-11-23 15:18:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-11-23 15:18:22,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:22,398 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 15:18:22,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:22,615 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,SelfDestructingSolverStorable32 [2023-11-23 15:18:22,615 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:22,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash 763714314, now seen corresponding path program 1 times [2023-11-23 15:18:22,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:22,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500920913] [2023-11-23 15:18:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2023-11-23 15:18:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-11-23 15:18:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2023-11-23 15:18:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-23 15:18:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:18:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 15:18:23,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500920913] [2023-11-23 15:18:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500920913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903725895] [2023-11-23 15:18:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:23,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:23,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:23,265 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 15:18:23,290 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 15:18:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:24,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 4078 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:24,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-23 15:18:24,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 15:18:24,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903725895] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:24,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:24,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:24,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645947549] [2023-11-23 15:18:24,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:24,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:24,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:24,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:24,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:24,211 INFO L87 Difference]: Start difference. First operand 3589 states and 5738 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 15:18:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:24,430 INFO L93 Difference]: Finished difference Result 6437 states and 10296 transitions. [2023-11-23 15:18:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:24,430 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 15:18:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:24,434 INFO L225 Difference]: With dead ends: 6437 [2023-11-23 15:18:24,434 INFO L226 Difference]: Without dead ends: 3593 [2023-11-23 15:18:24,435 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 15:18:24,436 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:24,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2023-11-23 15:18:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3593. [2023-11-23 15:18:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3522 states have (on average 1.5911413969335604) internal successors, (5604), 3522 states have internal predecessors, (5604), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5742 transitions. [2023-11-23 15:18:24,670 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5742 transitions. Word has length 763 [2023-11-23 15:18:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:24,671 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5742 transitions. [2023-11-23 15:18:24,671 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 15:18:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5742 transitions. [2023-11-23 15:18:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-11-23 15:18:24,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:24,677 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 15:18:24,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:24,893 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,SelfDestructingSolverStorable33 [2023-11-23 15:18:24,894 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:24,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1507031643, now seen corresponding path program 1 times [2023-11-23 15:18:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065792357] [2023-11-23 15:18:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:24,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2023-11-23 15:18:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-23 15:18:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2023-11-23 15:18:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:18:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-23 15:18:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 15:18:25,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:25,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065792357] [2023-11-23 15:18:25,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065792357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:25,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959418493] [2023-11-23 15:18:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:25,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:25,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:25,539 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 15:18:25,540 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 15:18:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:26,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 4085 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:26,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-23 15:18:26,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 15:18:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959418493] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077164245] [2023-11-23 15:18:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:26,482 INFO L87 Difference]: Start difference. First operand 3593 states and 5742 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 15:18:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:26,703 INFO L93 Difference]: Finished difference Result 6445 states and 10304 transitions. [2023-11-23 15:18:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:26,704 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 15:18:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:26,707 INFO L225 Difference]: With dead ends: 6445 [2023-11-23 15:18:26,707 INFO L226 Difference]: Without dead ends: 3597 [2023-11-23 15:18:26,709 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 15:18:26,709 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:26,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2023-11-23 15:18:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3597. [2023-11-23 15:18:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3526 states have (on average 1.5904707884288145) internal successors, (5608), 3526 states have internal predecessors, (5608), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5746 transitions. [2023-11-23 15:18:26,906 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5746 transitions. Word has length 764 [2023-11-23 15:18:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:26,907 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 5746 transitions. [2023-11-23 15:18:26,907 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 15:18:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5746 transitions. [2023-11-23 15:18:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-11-23 15:18:26,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:26,913 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 15:18:26,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-23 15:18:27,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-23 15:18:27,131 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:27,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash -242649897, now seen corresponding path program 1 times [2023-11-23 15:18:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:27,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187891526] [2023-11-23 15:18:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2023-11-23 15:18:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2023-11-23 15:18:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-23 15:18:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-23 15:18:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:18:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 15:18:27,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187891526] [2023-11-23 15:18:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187891526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222148630] [2023-11-23 15:18:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:27,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:27,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:27,809 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 15:18:27,811 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 15:18:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:28,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 4092 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:28,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 15:18:28,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 15:18:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222148630] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:28,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779717228] [2023-11-23 15:18:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:28,774 INFO L87 Difference]: Start difference. First operand 3597 states and 5746 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 15:18:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:29,032 INFO L93 Difference]: Finished difference Result 6453 states and 10312 transitions. [2023-11-23 15:18:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:29,033 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 15:18:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:29,036 INFO L225 Difference]: With dead ends: 6453 [2023-11-23 15:18:29,036 INFO L226 Difference]: Without dead ends: 3601 [2023-11-23 15:18:29,038 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 15:18:29,039 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:29,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2023-11-23 15:18:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2023-11-23 15:18:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3530 states have (on average 1.589801699716714) internal successors, (5612), 3530 states have internal predecessors, (5612), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5750 transitions. [2023-11-23 15:18:29,259 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5750 transitions. Word has length 765 [2023-11-23 15:18:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:29,260 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 5750 transitions. [2023-11-23 15:18:29,260 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 15:18:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5750 transitions. [2023-11-23 15:18:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-11-23 15:18:29,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:29,275 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 15:18:29,294 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 15:18:29,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:29,493 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:29,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash 820669239, now seen corresponding path program 1 times [2023-11-23 15:18:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917612262] [2023-11-23 15:18:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2023-11-23 15:18:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2023-11-23 15:18:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-11-23 15:18:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:18:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-23 15:18:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 15:18:30,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917612262] [2023-11-23 15:18:30,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917612262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777826669] [2023-11-23 15:18:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:30,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:30,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:30,264 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 15:18:30,265 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 15:18:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:31,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 4099 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:18:31,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 15:18:31,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 15:18:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777826669] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:31,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991109431] [2023-11-23 15:18:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:31,251 INFO L87 Difference]: Start difference. First operand 3601 states and 5750 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 15:18:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:31,487 INFO L93 Difference]: Finished difference Result 6461 states and 10320 transitions. [2023-11-23 15:18:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:31,488 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 15:18:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:31,495 INFO L225 Difference]: With dead ends: 6461 [2023-11-23 15:18:31,495 INFO L226 Difference]: Without dead ends: 3605 [2023-11-23 15:18:31,497 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 15:18:31,497 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:31,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2023-11-23 15:18:31,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3605. [2023-11-23 15:18:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3605 states, 3534 states have (on average 1.5891341256366722) internal successors, (5616), 3534 states have internal predecessors, (5616), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5754 transitions. [2023-11-23 15:18:31,711 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5754 transitions. Word has length 766 [2023-11-23 15:18:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:31,711 INFO L495 AbstractCegarLoop]: Abstraction has 3605 states and 5754 transitions. [2023-11-23 15:18:31,712 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 15:18:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5754 transitions. [2023-11-23 15:18:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-11-23 15:18:31,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:31,720 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 15:18:31,739 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 15:18:31,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-23 15:18:31,937 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:31,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1298919374, now seen corresponding path program 1 times [2023-11-23 15:18:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:31,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510852357] [2023-11-23 15:18:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:31,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-23 15:18:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-23 15:18:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-23 15:18:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:18:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:18:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 15:18:32,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510852357] [2023-11-23 15:18:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510852357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328589152] [2023-11-23 15:18:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:32,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:32,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:32,659 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 15:18:32,660 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 15:18:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:33,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 4106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:33,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 15:18:33,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 15:18:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328589152] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:33,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814987024] [2023-11-23 15:18:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:33,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:33,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:33,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:33,564 INFO L87 Difference]: Start difference. First operand 3605 states and 5754 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 15:18:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:33,797 INFO L93 Difference]: Finished difference Result 6469 states and 10328 transitions. [2023-11-23 15:18:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:33,798 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 15:18:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:33,801 INFO L225 Difference]: With dead ends: 6469 [2023-11-23 15:18:33,801 INFO L226 Difference]: Without dead ends: 3609 [2023-11-23 15:18:33,803 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 15:18:33,804 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2781 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 15:18:33,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2781 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2023-11-23 15:18:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 3609. [2023-11-23 15:18:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3538 states have (on average 1.5884680610514414) internal successors, (5620), 3538 states have internal predecessors, (5620), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5758 transitions. [2023-11-23 15:18:34,019 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5758 transitions. Word has length 767 [2023-11-23 15:18:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:34,022 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 5758 transitions. [2023-11-23 15:18:34,022 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 15:18:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5758 transitions. [2023-11-23 15:18:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-11-23 15:18:34,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:34,029 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 15:18:34,048 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 15:18:34,245 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 15:18:34,246 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:34,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1546562808, now seen corresponding path program 1 times [2023-11-23 15:18:34,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:34,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401495698] [2023-11-23 15:18:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:34,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2023-11-23 15:18:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-23 15:18:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:18:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-11-23 15:18:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-11-23 15:18:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 15:18:35,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:35,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401495698] [2023-11-23 15:18:35,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401495698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:35,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133463698] [2023-11-23 15:18:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:35,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:35,002 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 15:18:35,006 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 15:18:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:36,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 4113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:18:36,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 15:18:36,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 15:18:36,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133463698] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:36,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:18:36,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 15:18:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085974848] [2023-11-23 15:18:36,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:36,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:18:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:18:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:18:36,075 INFO L87 Difference]: Start difference. First operand 3609 states and 5758 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 15:18:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:36,344 INFO L93 Difference]: Finished difference Result 6477 states and 10336 transitions. [2023-11-23 15:18:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:18:36,344 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 15:18:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:36,348 INFO L225 Difference]: With dead ends: 6477 [2023-11-23 15:18:36,348 INFO L226 Difference]: Without dead ends: 3613 [2023-11-23 15:18:36,350 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 15:18:36,351 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2782 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 15:18:36,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2782 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:18:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2023-11-23 15:18:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3613. [2023-11-23 15:18:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3542 states have (on average 1.587803500846979) internal successors, (5624), 3542 states have internal predecessors, (5624), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 5762 transitions. [2023-11-23 15:18:36,567 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 5762 transitions. Word has length 768 [2023-11-23 15:18:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:36,568 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 5762 transitions. [2023-11-23 15:18:36,568 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 15:18:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 5762 transitions. [2023-11-23 15:18:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-11-23 15:18:36,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:36,573 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 15:18:36,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:36,791 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 15:18:36,791 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:36,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -300961431, now seen corresponding path program 1 times [2023-11-23 15:18:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98421800] [2023-11-23 15:18:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-11-23 15:18:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-11-23 15:18:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-23 15:18:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2023-11-23 15:18:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:18:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 15:18:37,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98421800] [2023-11-23 15:18:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98421800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039826326] [2023-11-23 15:18:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:37,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:37,470 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 15:18:37,470 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 15:18:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:38,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 4120 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:18:38,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 192 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 15:18:38,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 15:18:38,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039826326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:18:38,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:18:38,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:18:38,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377590305] [2023-11-23 15:18:38,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:18:38,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:38,535 INFO L87 Difference]: Start difference. First operand 3613 states and 5762 transitions. Second operand has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 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 15:18:38,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:38,884 INFO L93 Difference]: Finished difference Result 6488 states and 10349 transitions. [2023-11-23 15:18:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:38,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 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 769 [2023-11-23 15:18:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:38,888 INFO L225 Difference]: With dead ends: 6488 [2023-11-23 15:18:38,888 INFO L226 Difference]: Without dead ends: 3620 [2023-11-23 15:18:38,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1553 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 15:18:38,895 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 8 mSDsluCounter, 6952 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8347 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:38,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8347 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:18:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2023-11-23 15:18:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3617. [2023-11-23 15:18:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 3546 states have (on average 1.5871404399323181) internal successors, (5628), 3546 states have internal predecessors, (5628), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-23 15:18:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 5766 transitions. [2023-11-23 15:18:39,145 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 5766 transitions. Word has length 769 [2023-11-23 15:18:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:39,145 INFO L495 AbstractCegarLoop]: Abstraction has 3617 states and 5766 transitions. [2023-11-23 15:18:39,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 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 15:18:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 5766 transitions. [2023-11-23 15:18:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-11-23 15:18:39,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:39,151 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] [2023-11-23 15:18:39,171 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 15:18:39,368 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 15:18:39,368 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:39,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2053950422, now seen corresponding path program 2 times [2023-11-23 15:18:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895729654] [2023-11-23 15:18:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2023-11-23 15:18:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-23 15:18:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-23 15:18:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:18:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-23 15:18:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-23 15:18:40,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895729654] [2023-11-23 15:18:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895729654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555393427] [2023-11-23 15:18:40,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:18:40,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:40,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:40,042 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 15:18:40,066 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 15:18:40,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:18:40,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:18:40,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:18:40,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-23 15:18:40,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:18:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555393427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:40,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:18:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:18:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237258317] [2023-11-23 15:18:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:40,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:18:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:18:40,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:18:40,834 INFO L87 Difference]: Start difference. First operand 3617 states and 5766 transitions. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 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 15:18:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:41,426 INFO L93 Difference]: Finished difference Result 3837 states and 6099 transitions. [2023-11-23 15:18:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 15:18:41,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 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 770 [2023-11-23 15:18:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:41,428 INFO L225 Difference]: With dead ends: 3837 [2023-11-23 15:18:41,429 INFO L226 Difference]: Without dead ends: 2140 [2023-11-23 15:18:41,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 789 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 15:18:41,430 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 38 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:41,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3792 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 15:18:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2023-11-23 15:18:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2120. [2023-11-23 15:18:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2077 states have (on average 1.587385652383245) internal successors, (3297), 2077 states have internal predecessors, (3297), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:18:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3379 transitions. [2023-11-23 15:18:41,551 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3379 transitions. Word has length 770 [2023-11-23 15:18:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:41,552 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 3379 transitions. [2023-11-23 15:18:41,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 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 15:18:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3379 transitions. [2023-11-23 15:18:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-23 15:18:41,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:41,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:41,570 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 15:18:41,770 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 15:18:41,770 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:41,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:41,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1816836066, now seen corresponding path program 1 times [2023-11-23 15:18:41,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129399959] [2023-11-23 15:18:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-23 15:18:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-23 15:18:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:18:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:18:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-23 15:18:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:42,473 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 15:18:42,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129399959] [2023-11-23 15:18:42,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129399959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829794071] [2023-11-23 15:18:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:42,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:42,475 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 15:18:42,476 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 15:18:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:43,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 4136 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:18:43,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:43,550 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 15:18:43,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:43,581 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 15:18:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829794071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:18:43,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:18:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:18:43,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680368399] [2023-11-23 15:18:43,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:18:43,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:43,584 INFO L87 Difference]: Start difference. First operand 2120 states and 3379 transitions. Second operand has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:43,819 INFO L93 Difference]: Finished difference Result 3500 states and 5579 transitions. [2023-11-23 15:18:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:43,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 773 [2023-11-23 15:18:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:43,822 INFO L225 Difference]: With dead ends: 3500 [2023-11-23 15:18:43,822 INFO L226 Difference]: Without dead ends: 2125 [2023-11-23 15:18:43,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1561 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 15:18:43,824 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 8 mSDsluCounter, 8338 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:43,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9732 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:18:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-11-23 15:18:43,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2122. [2023-11-23 15:18:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2079 states have (on average 1.586820586820587) internal successors, (3299), 2079 states have internal predecessors, (3299), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:18:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3381 transitions. [2023-11-23 15:18:43,947 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3381 transitions. Word has length 773 [2023-11-23 15:18:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:43,948 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3381 transitions. [2023-11-23 15:18:43,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3381 transitions. [2023-11-23 15:18:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-23 15:18:43,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:43,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:43,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:44,170 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 15:18:44,171 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:44,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -214225171, now seen corresponding path program 2 times [2023-11-23 15:18:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:44,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059508547] [2023-11-23 15:18:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-23 15:18:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-23 15:18:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-23 15:18:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:18:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:18:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:44,893 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 15:18:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059508547] [2023-11-23 15:18:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059508547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937241012] [2023-11-23 15:18:44,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:18:44,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:44,895 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 15:18:44,921 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 15:18:45,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:18:45,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:18:45,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 15:18:45,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 15:18:46,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:18:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937241012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:46,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:18:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:18:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233979426] [2023-11-23 15:18:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:18:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:18:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:18:46,999 INFO L87 Difference]: Start difference. First operand 2122 states and 3381 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 15:18:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:47,777 INFO L93 Difference]: Finished difference Result 3831 states and 6086 transitions. [2023-11-23 15:18:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:18:47,778 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 774 [2023-11-23 15:18:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:47,780 INFO L225 Difference]: With dead ends: 3831 [2023-11-23 15:18:47,780 INFO L226 Difference]: Without dead ends: 2122 [2023-11-23 15:18:47,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 793 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 15:18:47,782 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 792 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1664 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 15:18:47,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1664 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 15:18:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-11-23 15:18:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2023-11-23 15:18:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2079 states have (on average 1.581048581048581) internal successors, (3287), 2079 states have internal predecessors, (3287), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:18:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3369 transitions. [2023-11-23 15:18:47,904 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3369 transitions. Word has length 774 [2023-11-23 15:18:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:47,905 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3369 transitions. [2023-11-23 15:18:47,905 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 15:18:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3369 transitions. [2023-11-23 15:18:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-23 15:18:47,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:47,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:47,925 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 15:18:48,118 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 15:18:48,118 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:48,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1500925975, now seen corresponding path program 1 times [2023-11-23 15:18:48,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:48,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805865449] [2023-11-23 15:18:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-23 15:18:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-23 15:18:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-23 15:18:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:18:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:18:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:48,832 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 15:18:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805865449] [2023-11-23 15:18:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805865449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155876152] [2023-11-23 15:18:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:48,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:48,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:48,834 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 15:18:48,837 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 15:18:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:49,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 4145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:18:49,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 15:18:49,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:49,931 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 15:18:49,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155876152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:18:49,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:18:49,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:18:49,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753513126] [2023-11-23 15:18:49,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:18:49,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:49,934 INFO L87 Difference]: Start difference. First operand 2122 states and 3369 transitions. Second operand has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:50,218 INFO L93 Difference]: Finished difference Result 3504 states and 5563 transitions. [2023-11-23 15:18:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:50,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 774 [2023-11-23 15:18:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:50,221 INFO L225 Difference]: With dead ends: 3504 [2023-11-23 15:18:50,221 INFO L226 Difference]: Without dead ends: 2127 [2023-11-23 15:18:50,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1563 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 15:18:50,222 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 8 mSDsluCounter, 8332 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9725 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:50,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9725 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:18:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2023-11-23 15:18:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2124. [2023-11-23 15:18:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2081 states have (on average 1.5804901489668428) internal successors, (3289), 2081 states have internal predecessors, (3289), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:18:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3371 transitions. [2023-11-23 15:18:50,345 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3371 transitions. Word has length 774 [2023-11-23 15:18:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:50,346 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 3371 transitions. [2023-11-23 15:18:50,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3371 transitions. [2023-11-23 15:18:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-23 15:18:50,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:50,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:50,369 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 15:18:50,552 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 15:18:50,552 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:50,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 749921115, now seen corresponding path program 2 times [2023-11-23 15:18:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467112250] [2023-11-23 15:18:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:18:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:18:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:18:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-23 15:18:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2023-11-23 15:18:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 15:18:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467112250] [2023-11-23 15:18:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467112250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451428591] [2023-11-23 15:18:51,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:18:51,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:51,256 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 15:18:51,257 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 15:18:51,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:18:51,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:18:51,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 15:18:51,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-23 15:18:53,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:18:53,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451428591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:18:53,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:18:53,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-23 15:18:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204117639] [2023-11-23 15:18:53,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:18:53,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:18:53,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:53,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:18:53,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:18:53,021 INFO L87 Difference]: Start difference. First operand 2124 states and 3371 transitions. Second operand has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 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 15:18:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:54,543 INFO L93 Difference]: Finished difference Result 5498 states and 8706 transitions. [2023-11-23 15:18:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:54,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 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 775 [2023-11-23 15:18:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:54,546 INFO L225 Difference]: With dead ends: 5498 [2023-11-23 15:18:54,546 INFO L226 Difference]: Without dead ends: 3797 [2023-11-23 15:18:54,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 792 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 15:18:54,549 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 1634 mSDsluCounter, 3663 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:18:54,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 5105 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 15:18:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2023-11-23 15:18:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2196. [2023-11-23 15:18:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2153 states have (on average 1.572224802601022) internal successors, (3385), 2153 states have internal predecessors, (3385), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:18:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3467 transitions. [2023-11-23 15:18:54,676 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3467 transitions. Word has length 775 [2023-11-23 15:18:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:54,676 INFO L495 AbstractCegarLoop]: Abstraction has 2196 states and 3467 transitions. [2023-11-23 15:18:54,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 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 15:18:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3467 transitions. [2023-11-23 15:18:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-23 15:18:54,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:54,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:54,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:54,895 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 15:18:54,895 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:54,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash 130957339, now seen corresponding path program 1 times [2023-11-23 15:18:54,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:54,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698934942] [2023-11-23 15:18:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:54,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-23 15:18:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:18:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:18:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-23 15:18:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2023-11-23 15:18:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 15:18:55,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698934942] [2023-11-23 15:18:55,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698934942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004528154] [2023-11-23 15:18:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:55,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:55,588 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 15:18:55,589 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 15:18:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:56,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 4154 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:18:56,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 15:18:56,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:18:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 15:18:56,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004528154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:18:56,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:18:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:18:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379933415] [2023-11-23 15:18:56,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:18:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:18:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:18:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:18:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:18:56,522 INFO L87 Difference]: Start difference. First operand 2196 states and 3467 transitions. Second operand has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:18:56,769 INFO L93 Difference]: Finished difference Result 3628 states and 5727 transitions. [2023-11-23 15:18:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:18:56,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:18:56,772 INFO L225 Difference]: With dead ends: 3628 [2023-11-23 15:18:56,772 INFO L226 Difference]: Without dead ends: 2201 [2023-11-23 15:18:56,773 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 15:18:56,773 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 8 mSDsluCounter, 6942 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8335 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 15:18:56,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8335 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:18:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2023-11-23 15:18:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2198. [2023-11-23 15:18:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2155 states have (on average 1.5716937354988398) internal successors, (3387), 2155 states have internal predecessors, (3387), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:18:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3469 transitions. [2023-11-23 15:18:56,904 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3469 transitions. Word has length 775 [2023-11-23 15:18:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:18:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 2198 states and 3469 transitions. [2023-11-23 15:18:56,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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 15:18:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3469 transitions. [2023-11-23 15:18:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-23 15:18:56,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:18:56,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:56,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-23 15:18:57,128 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 15:18:57,129 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:18:57,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:18:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash 404245027, now seen corresponding path program 2 times [2023-11-23 15:18:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:18:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164759778] [2023-11-23 15:18:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:18:57,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:18:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-23 15:18:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:18:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:18:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:18:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:18:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2023-11-23 15:18:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-23 15:18:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:18:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:18:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2023-11-23 15:18:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:18:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-23 15:18:57,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:18:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164759778] [2023-11-23 15:18:57,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164759778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:18:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399608452] [2023-11-23 15:18:57,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:18:57,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:18:57,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:18:57,842 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 15:18:57,843 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 15:18:58,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:18:58,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:18:58,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 15:18:58,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:18:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 169 proven. 3 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-23 15:18:59,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 88 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 15:19:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399608452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:01,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:01,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 13 [2023-11-23 15:19:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045055743] [2023-11-23 15:19:01,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 15:19:01,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 15:19:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:19:01,646 INFO L87 Difference]: Start difference. First operand 2198 states and 3469 transitions. Second operand has 13 states, 13 states have (on average 149.84615384615384) internal successors, (1948), 13 states have internal predecessors, (1948), 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 15:19:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:03,456 INFO L93 Difference]: Finished difference Result 3737 states and 5879 transitions. [2023-11-23 15:19:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:19:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 149.84615384615384) internal successors, (1948), 13 states have internal predecessors, (1948), 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 776 [2023-11-23 15:19:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:03,459 INFO L225 Difference]: With dead ends: 3737 [2023-11-23 15:19:03,459 INFO L226 Difference]: Without dead ends: 2020 [2023-11-23 15:19:03,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1565 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:19:03,460 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 2422 mSDsluCounter, 3813 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:03,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 4662 Invalid, 3890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 15:19:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-11-23 15:19:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2008. [2023-11-23 15:19:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1980 states have (on average 1.5656565656565657) internal successors, (3100), 1980 states have internal predecessors, (3100), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 15:19:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3152 transitions. [2023-11-23 15:19:03,628 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3152 transitions. Word has length 776 [2023-11-23 15:19:03,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:03,628 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 3152 transitions. [2023-11-23 15:19:03,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.84615384615384) internal successors, (1948), 13 states have internal predecessors, (1948), 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 15:19:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3152 transitions. [2023-11-23 15:19:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-11-23 15:19:03,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:03,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:03,649 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 15:19:03,839 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 15:19:03,841 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:03,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1998224237, now seen corresponding path program 1 times [2023-11-23 15:19:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563211422] [2023-11-23 15:19:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-23 15:19:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-23 15:19:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-23 15:19:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-23 15:19:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-11-23 15:19:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-23 15:19:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-23 15:19:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:19:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-23 15:19:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-23 15:19:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563211422] [2023-11-23 15:19:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563211422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:04,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:19:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098433797] [2023-11-23 15:19:04,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:19:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:19:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:19:04,751 INFO L87 Difference]: Start difference. First operand 2008 states and 3152 transitions. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 15:19:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:05,119 INFO L93 Difference]: Finished difference Result 5595 states and 8691 transitions. [2023-11-23 15:19:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:19:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 778 [2023-11-23 15:19:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:05,124 INFO L225 Difference]: With dead ends: 5595 [2023-11-23 15:19:05,124 INFO L226 Difference]: Without dead ends: 4127 [2023-11-23 15:19:05,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:19:05,126 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1676 mSDsluCounter, 4365 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:05,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 5883 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2023-11-23 15:19:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 2466. [2023-11-23 15:19:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2423 states have (on average 1.543953776310359) internal successors, (3741), 2423 states have internal predecessors, (3741), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3823 transitions. [2023-11-23 15:19:05,271 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3823 transitions. Word has length 778 [2023-11-23 15:19:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:05,271 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 3823 transitions. [2023-11-23 15:19:05,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 15:19:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3823 transitions. [2023-11-23 15:19:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-11-23 15:19:05,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:05,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-23 15:19:05,277 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:05,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash -757700425, now seen corresponding path program 1 times [2023-11-23 15:19:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:05,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158348076] [2023-11-23 15:19:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-23 15:19:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:19:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:19:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-11-23 15:19:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2023-11-23 15:19:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-23 15:19:05,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:05,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158348076] [2023-11-23 15:19:05,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158348076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:05,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266539552] [2023-11-23 15:19:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:05,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:05,985 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 15:19:05,999 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 15:19:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:07,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:07,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 15:19:07,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-23 15:19:07,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266539552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:07,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:07,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283700469] [2023-11-23 15:19:07,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:07,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:07,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:07,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:07,142 INFO L87 Difference]: Start difference. First operand 2466 states and 3823 transitions. Second operand has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:07,395 INFO L93 Difference]: Finished difference Result 4082 states and 6327 transitions. [2023-11-23 15:19:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:07,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:07,398 INFO L225 Difference]: With dead ends: 4082 [2023-11-23 15:19:07,398 INFO L226 Difference]: Without dead ends: 2472 [2023-11-23 15:19:07,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 1573 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 15:19:07,400 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 8 mSDsluCounter, 6939 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8331 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 15:19:07,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8331 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2023-11-23 15:19:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2023-11-23 15:19:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2429 states have (on average 1.5426101276245368) internal successors, (3747), 2429 states have internal predecessors, (3747), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3829 transitions. [2023-11-23 15:19:07,546 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3829 transitions. Word has length 779 [2023-11-23 15:19:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:07,547 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3829 transitions. [2023-11-23 15:19:07,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3829 transitions. [2023-11-23 15:19:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-23 15:19:07,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:07,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:07,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:07,768 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,SelfDestructingSolverStorable48 [2023-11-23 15:19:07,769 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:07,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1223993739, now seen corresponding path program 2 times [2023-11-23 15:19:07,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:07,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212367925] [2023-11-23 15:19:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-23 15:19:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-23 15:19:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:19:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-23 15:19:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2023-11-23 15:19:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 15:19:08,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:08,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212367925] [2023-11-23 15:19:08,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212367925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:08,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922815925] [2023-11-23 15:19:08,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:19:08,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:08,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:08,472 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 15:19:08,473 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 15:19:09,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:19:09,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:09,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 15:19:09,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-11-23 15:19:09,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:19:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922815925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:09,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:19:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-23 15:19:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570070629] [2023-11-23 15:19:09,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:09,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:19:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:19:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:09,936 INFO L87 Difference]: Start difference. First operand 2472 states and 3829 transitions. Second operand has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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 15:19:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:11,351 INFO L93 Difference]: Finished difference Result 4436 states and 6857 transitions. [2023-11-23 15:19:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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 782 [2023-11-23 15:19:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:11,354 INFO L225 Difference]: With dead ends: 4436 [2023-11-23 15:19:11,354 INFO L226 Difference]: Without dead ends: 2472 [2023-11-23 15:19:11,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:19:11,356 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1606 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:11,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 3528 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 15:19:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2023-11-23 15:19:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2214. [2023-11-23 15:19:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2171 states have (on average 1.5573468447719945) internal successors, (3381), 2171 states have internal predecessors, (3381), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3463 transitions. [2023-11-23 15:19:11,524 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3463 transitions. Word has length 782 [2023-11-23 15:19:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:11,525 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3463 transitions. [2023-11-23 15:19:11,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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 15:19:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3463 transitions. [2023-11-23 15:19:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-23 15:19:11,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:11,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:11,546 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 15:19:11,746 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,SelfDestructingSolverStorable49 [2023-11-23 15:19:11,747 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:11,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2003225931, now seen corresponding path program 1 times [2023-11-23 15:19:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281735003] [2023-11-23 15:19:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-23 15:19:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-23 15:19:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:19:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-23 15:19:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2023-11-23 15:19:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 15:19:12,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281735003] [2023-11-23 15:19:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281735003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607359219] [2023-11-23 15:19:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:12,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:12,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:12,455 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 15:19:12,456 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 15:19:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:13,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 4197 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:13,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-23 15:19:13,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 15:19:13,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607359219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:13,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:13,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325682470] [2023-11-23 15:19:13,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:13,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:13,656 INFO L87 Difference]: Start difference. First operand 2214 states and 3463 transitions. Second operand has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:13,944 INFO L93 Difference]: Finished difference Result 3664 states and 5729 transitions. [2023-11-23 15:19:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:13,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:13,948 INFO L225 Difference]: With dead ends: 3664 [2023-11-23 15:19:13,948 INFO L226 Difference]: Without dead ends: 2220 [2023-11-23 15:19:13,949 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 15:19:13,950 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 8 mSDsluCounter, 6929 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8319 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 15:19:13,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8319 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2023-11-23 15:19:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2023-11-23 15:19:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2177 states have (on average 1.5558107487367938) internal successors, (3387), 2177 states have internal predecessors, (3387), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3469 transitions. [2023-11-23 15:19:14,130 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3469 transitions. Word has length 782 [2023-11-23 15:19:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:14,130 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3469 transitions. [2023-11-23 15:19:14,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3469 transitions. [2023-11-23 15:19:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-23 15:19:14,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:14,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:14,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:14,337 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:14,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1436754209, now seen corresponding path program 2 times [2023-11-23 15:19:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547848799] [2023-11-23 15:19:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:14,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-23 15:19:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:19:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:19:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:19:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:19:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 15:19:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547848799] [2023-11-23 15:19:15,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547848799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608891686] [2023-11-23 15:19:15,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:19:15,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:15,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:15,124 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 15:19:15,168 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 15:19:15,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:19:15,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:15,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 15:19:15,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-11-23 15:19:15,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:19:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608891686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:15,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:19:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-23 15:19:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882812998] [2023-11-23 15:19:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:19:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:19:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:15,991 INFO L87 Difference]: Start difference. First operand 2220 states and 3469 transitions. Second operand has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 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 15:19:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:16,589 INFO L93 Difference]: Finished difference Result 6562 states and 10238 transitions. [2023-11-23 15:19:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:19:16,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 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 15:19:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:16,604 INFO L225 Difference]: With dead ends: 6562 [2023-11-23 15:19:16,604 INFO L226 Difference]: Without dead ends: 5112 [2023-11-23 15:19:16,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 804 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:19:16,607 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 3974 mSDsluCounter, 7655 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3974 SdHoareTripleChecker+Valid, 9303 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:16,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3974 Valid, 9303 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5112 states. [2023-11-23 15:19:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5112 to 2222. [2023-11-23 15:19:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2179 states have (on average 1.5562184488297384) internal successors, (3391), 2179 states have internal predecessors, (3391), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3473 transitions. [2023-11-23 15:19:16,781 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3473 transitions. Word has length 785 [2023-11-23 15:19:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:16,781 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 3473 transitions. [2023-11-23 15:19:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 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 15:19:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3473 transitions. [2023-11-23 15:19:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-23 15:19:16,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:16,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:16,802 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 15:19:17,000 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,SelfDestructingSolverStorable51 [2023-11-23 15:19:17,001 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:17,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1043727199, now seen corresponding path program 1 times [2023-11-23 15:19:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130257170] [2023-11-23 15:19:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-23 15:19:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:19:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-23 15:19:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:19:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:19:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 15:19:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130257170] [2023-11-23 15:19:17,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130257170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725779515] [2023-11-23 15:19:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:17,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:17,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:17,766 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 15:19:17,766 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 15:19:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:18,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 4219 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:18,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 15:19:18,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 15:19:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725779515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:18,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324303283] [2023-11-23 15:19:18,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:18,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:18,949 INFO L87 Difference]: Start difference. First operand 2222 states and 3473 transitions. Second operand has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:19,203 INFO L93 Difference]: Finished difference Result 3684 states and 5753 transitions. [2023-11-23 15:19:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:19,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:19,206 INFO L225 Difference]: With dead ends: 3684 [2023-11-23 15:19:19,206 INFO L226 Difference]: Without dead ends: 2228 [2023-11-23 15:19:19,207 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 15:19:19,207 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 8 mSDsluCounter, 5542 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6932 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 15:19:19,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6932 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2023-11-23 15:19:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2023-11-23 15:19:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2185 states have (on average 1.5546910755148742) internal successors, (3397), 2185 states have internal predecessors, (3397), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3479 transitions. [2023-11-23 15:19:19,369 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3479 transitions. Word has length 785 [2023-11-23 15:19:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:19,369 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 3479 transitions. [2023-11-23 15:19:19,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 15:19:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3479 transitions. [2023-11-23 15:19:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2023-11-23 15:19:19,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:19,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:19,393 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 15:19:19,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:19,588 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:19,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -115605690, now seen corresponding path program 2 times [2023-11-23 15:19:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520587744] [2023-11-23 15:19:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:19,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-23 15:19:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-23 15:19:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:19:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-23 15:19:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 753 [2023-11-23 15:19:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 15:19:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520587744] [2023-11-23 15:19:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520587744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611785033] [2023-11-23 15:19:20,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:19:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:20,294 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 15:19:20,294 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 15:19:21,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 15:19:21,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:21,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 15:19:21,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 175 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-23 15:19:21,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-23 15:19:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611785033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:22,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:22,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-11-23 15:19:22,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053386173] [2023-11-23 15:19:22,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:19:22,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:19:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:19:22,597 INFO L87 Difference]: Start difference. First operand 2228 states and 3479 transitions. Second operand has 14 states, 14 states have (on average 138.21428571428572) internal successors, (1935), 14 states have internal predecessors, (1935), 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 15:19:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:24,138 INFO L93 Difference]: Finished difference Result 10936 states and 17003 transitions. [2023-11-23 15:19:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 15:19:24,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 138.21428571428572) internal successors, (1935), 14 states have internal predecessors, (1935), 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 15:19:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:24,147 INFO L225 Difference]: With dead ends: 10936 [2023-11-23 15:19:24,147 INFO L226 Difference]: Without dead ends: 9166 [2023-11-23 15:19:24,150 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 15:19:24,150 INFO L413 NwaCegarLoop]: 2157 mSDtfsCounter, 9756 mSDsluCounter, 15111 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9761 SdHoareTripleChecker+Valid, 17268 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:24,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9761 Valid, 17268 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 15:19:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9166 states. [2023-11-23 15:19:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9166 to 2290. [2023-11-23 15:19:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 2247 states have (on average 1.5447263017356476) internal successors, (3471), 2247 states have internal predecessors, (3471), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3553 transitions. [2023-11-23 15:19:24,414 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3553 transitions. Word has length 788 [2023-11-23 15:19:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:24,414 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 3553 transitions. [2023-11-23 15:19:24,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 138.21428571428572) internal successors, (1935), 14 states have internal predecessors, (1935), 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 15:19:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3553 transitions. [2023-11-23 15:19:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-11-23 15:19:24,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:24,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:24,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-23 15:19:24,634 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,SelfDestructingSolverStorable53 [2023-11-23 15:19:24,635 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:24,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1331466562, now seen corresponding path program 1 times [2023-11-23 15:19:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121318170] [2023-11-23 15:19:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-23 15:19:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-23 15:19:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-23 15:19:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-23 15:19:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-23 15:19:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 15:19:25,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121318170] [2023-11-23 15:19:25,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121318170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630441201] [2023-11-23 15:19:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:25,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:25,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:25,406 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 15:19:25,407 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 15:19:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:26,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 4247 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 15:19:26,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 196 proven. 22 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 15:19:26,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 15:19:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630441201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:26,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:26,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-23 15:19:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574526382] [2023-11-23 15:19:26,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:26,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:19:26,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:26,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:19:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:19:26,665 INFO L87 Difference]: Start difference. First operand 2290 states and 3553 transitions. Second operand has 12 states, 12 states have (on average 60.333333333333336) internal successors, (724), 12 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 15:19:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:26,989 INFO L93 Difference]: Finished difference Result 3798 states and 5885 transitions. [2023-11-23 15:19:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:19:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 60.333333333333336) internal successors, (724), 12 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 789 [2023-11-23 15:19:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:26,992 INFO L225 Difference]: With dead ends: 3798 [2023-11-23 15:19:26,992 INFO L226 Difference]: Without dead ends: 2294 [2023-11-23 15:19:26,993 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 15:19:26,993 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 11 mSDsluCounter, 9728 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11122 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:26,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 11122 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2023-11-23 15:19:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2023-11-23 15:19:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2251 states have (on average 1.543758329631275) internal successors, (3475), 2251 states have internal predecessors, (3475), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3557 transitions. [2023-11-23 15:19:27,177 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3557 transitions. Word has length 789 [2023-11-23 15:19:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:27,178 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 3557 transitions. [2023-11-23 15:19:27,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 60.333333333333336) internal successors, (724), 12 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 15:19:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3557 transitions. [2023-11-23 15:19:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-11-23 15:19:27,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:27,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:27,205 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 15:19:27,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:27,400 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:27,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1828542014, now seen corresponding path program 2 times [2023-11-23 15:19:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88480999] [2023-11-23 15:19:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-23 15:19:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-23 15:19:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-23 15:19:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-23 15:19:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2023-11-23 15:19:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 15:19:28,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88480999] [2023-11-23 15:19:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88480999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099584886] [2023-11-23 15:19:28,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:19:28,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:28,186 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 15:19:28,187 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 15:19:29,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:19:29,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:29,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 4261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 15:19:29,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-23 15:19:30,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:19:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099584886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:30,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:19:30,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 15:19:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845290523] [2023-11-23 15:19:30,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:30,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:19:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:19:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:19:30,274 INFO L87 Difference]: Start difference. First operand 2294 states and 3557 transitions. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 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 15:19:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:30,593 INFO L93 Difference]: Finished difference Result 3802 states and 5885 transitions. [2023-11-23 15:19:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:19:30,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 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 791 [2023-11-23 15:19:30,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:30,596 INFO L225 Difference]: With dead ends: 3802 [2023-11-23 15:19:30,596 INFO L226 Difference]: Without dead ends: 2294 [2023-11-23 15:19:30,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 810 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 15:19:30,598 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 892 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:30,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 2580 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2023-11-23 15:19:30,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2023-11-23 15:19:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2251 states have (on average 1.541981341625944) internal successors, (3471), 2251 states have internal predecessors, (3471), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3553 transitions. [2023-11-23 15:19:30,804 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3553 transitions. Word has length 791 [2023-11-23 15:19:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:30,805 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 3553 transitions. [2023-11-23 15:19:30,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 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 15:19:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3553 transitions. [2023-11-23 15:19:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-11-23 15:19:30,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:30,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:30,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-23 15:19:31,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:31,023 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:31,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:31,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1450598217, now seen corresponding path program 1 times [2023-11-23 15:19:31,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:31,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492322303] [2023-11-23 15:19:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:31,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-23 15:19:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-23 15:19:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-23 15:19:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2023-11-23 15:19:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 757 [2023-11-23 15:19:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-11-23 15:19:31,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:31,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492322303] [2023-11-23 15:19:31,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492322303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:31,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:19:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:19:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260770395] [2023-11-23 15:19:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:19:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:19:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:19:31,913 INFO L87 Difference]: Start difference. First operand 2294 states and 3553 transitions. Second operand has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 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 15:19:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:32,259 INFO L93 Difference]: Finished difference Result 3802 states and 5877 transitions. [2023-11-23 15:19:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:19:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 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 792 [2023-11-23 15:19:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:32,262 INFO L225 Difference]: With dead ends: 3802 [2023-11-23 15:19:32,262 INFO L226 Difference]: Without dead ends: 2294 [2023-11-23 15:19:32,263 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 15:19:32,263 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 2265 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:32,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 2580 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2023-11-23 15:19:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2023-11-23 15:19:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2251 states have (on average 1.5410928476232786) internal successors, (3469), 2251 states have internal predecessors, (3469), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3551 transitions. [2023-11-23 15:19:32,457 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3551 transitions. Word has length 792 [2023-11-23 15:19:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:32,457 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 3551 transitions. [2023-11-23 15:19:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 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 15:19:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3551 transitions. [2023-11-23 15:19:32,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-11-23 15:19:32,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:32,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:32,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-23 15:19:32,489 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:32,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:32,489 INFO L85 PathProgramCache]: Analyzing trace with hash 348715786, now seen corresponding path program 1 times [2023-11-23 15:19:32,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:32,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881179569] [2023-11-23 15:19:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:32,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-23 15:19:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:19:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:19:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2023-11-23 15:19:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2023-11-23 15:19:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 15:19:33,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881179569] [2023-11-23 15:19:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881179569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074658437] [2023-11-23 15:19:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:33,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:33,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:33,251 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 15:19:33,252 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 15:19:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:34,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 4267 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:34,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-23 15:19:34,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 15:19:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074658437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:34,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473442686] [2023-11-23 15:19:34,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:34,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:34,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:34,587 INFO L87 Difference]: Start difference. First operand 2294 states and 3551 transitions. Second operand has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 15:19:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:34,909 INFO L93 Difference]: Finished difference Result 3808 states and 5885 transitions. [2023-11-23 15:19:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:34,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 793 [2023-11-23 15:19:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:34,912 INFO L225 Difference]: With dead ends: 3808 [2023-11-23 15:19:34,912 INFO L226 Difference]: Without dead ends: 2300 [2023-11-23 15:19:34,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1609 GetRequests, 1601 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 15:19:34,914 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 8 mSDsluCounter, 8298 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9685 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 15:19:34,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9685 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2023-11-23 15:19:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2023-11-23 15:19:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2257 states have (on average 1.5396544085068675) internal successors, (3475), 2257 states have internal predecessors, (3475), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3557 transitions. [2023-11-23 15:19:35,112 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3557 transitions. Word has length 793 [2023-11-23 15:19:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:35,113 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3557 transitions. [2023-11-23 15:19:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 15:19:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3557 transitions. [2023-11-23 15:19:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-11-23 15:19:35,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:35,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:35,138 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 15:19:35,332 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,SelfDestructingSolverStorable57 [2023-11-23 15:19:35,332 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:35,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1644447549, now seen corresponding path program 2 times [2023-11-23 15:19:35,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:35,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561034478] [2023-11-23 15:19:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:35,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-23 15:19:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:19:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-23 15:19:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:19:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 761 [2023-11-23 15:19:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-23 15:19:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561034478] [2023-11-23 15:19:36,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561034478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962841159] [2023-11-23 15:19:36,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:19:36,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:36,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:36,082 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 15:19:36,083 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 15:19:37,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:19:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:37,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 4288 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:37,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 15:19:37,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-23 15:19:37,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962841159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:37,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:37,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43745597] [2023-11-23 15:19:37,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:37,391 INFO L87 Difference]: Start difference. First operand 2300 states and 3557 transitions. Second operand has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 15:19:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:37,751 INFO L93 Difference]: Finished difference Result 3820 states and 5897 transitions. [2023-11-23 15:19:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:37,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 15:19:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:37,753 INFO L225 Difference]: With dead ends: 3820 [2023-11-23 15:19:37,753 INFO L226 Difference]: Without dead ends: 2306 [2023-11-23 15:19:37,754 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 15:19:37,754 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 8 mSDsluCounter, 5530 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6917 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 15:19:37,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6917 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-11-23 15:19:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-11-23 15:19:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2263 states have (on average 1.5382235969951392) internal successors, (3481), 2263 states have internal predecessors, (3481), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 15:19:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3563 transitions. [2023-11-23 15:19:37,958 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3563 transitions. Word has length 796 [2023-11-23 15:19:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:37,958 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 3563 transitions. [2023-11-23 15:19:37,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 15:19:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3563 transitions. [2023-11-23 15:19:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2023-11-23 15:19:37,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:37,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:37,984 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 15:19:38,178 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,SelfDestructingSolverStorable58 [2023-11-23 15:19:38,178 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:38,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2088385213, now seen corresponding path program 3 times [2023-11-23 15:19:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543895689] [2023-11-23 15:19:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-23 15:19:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-23 15:19:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-23 15:19:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 753 [2023-11-23 15:19:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2023-11-23 15:19:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-23 15:19:38,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:38,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543895689] [2023-11-23 15:19:38,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543895689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:38,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110689280] [2023-11-23 15:19:38,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 15:19:38,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:38,961 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 15:19:38,962 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 15:19:41,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 15:19:41,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:41,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 3549 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 15:19:41,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 15:19:42,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:19:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110689280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:19:42,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:19:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2023-11-23 15:19:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054301595] [2023-11-23 15:19:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:19:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:19:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:19:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:19:42,271 INFO L87 Difference]: Start difference. First operand 2306 states and 3563 transitions. Second operand has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 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 15:19:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:43,243 INFO L93 Difference]: Finished difference Result 8198 states and 12600 transitions. [2023-11-23 15:19:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:19:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 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 799 [2023-11-23 15:19:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:43,249 INFO L225 Difference]: With dead ends: 8198 [2023-11-23 15:19:43,249 INFO L226 Difference]: Without dead ends: 6678 [2023-11-23 15:19:43,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:19:43,251 INFO L413 NwaCegarLoop]: 2466 mSDtfsCounter, 3727 mSDsluCounter, 9090 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3732 SdHoareTripleChecker+Valid, 11556 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:43,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3732 Valid, 11556 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 15:19:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6678 states. [2023-11-23 15:19:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6678 to 3940. [2023-11-23 15:19:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3856 states have (on average 1.5282676348547717) internal successors, (5893), 3856 states have internal predecessors, (5893), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:19:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 6057 transitions. [2023-11-23 15:19:43,589 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 6057 transitions. Word has length 799 [2023-11-23 15:19:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:43,589 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 6057 transitions. [2023-11-23 15:19:43,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 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 15:19:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 6057 transitions. [2023-11-23 15:19:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-11-23 15:19:43,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:43,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:43,611 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 15:19:43,811 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,SelfDestructingSolverStorable59 [2023-11-23 15:19:43,811 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:43,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:43,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1648254452, now seen corresponding path program 1 times [2023-11-23 15:19:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:43,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90560156] [2023-11-23 15:19:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:43,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-23 15:19:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-11-23 15:19:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-23 15:19:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-23 15:19:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2023-11-23 15:19:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-23 15:19:44,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:44,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90560156] [2023-11-23 15:19:44,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90560156] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:44,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352564538] [2023-11-23 15:19:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:44,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:44,568 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 15:19:44,568 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 15:19:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:45,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 4313 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:45,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-23 15:19:45,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-23 15:19:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352564538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:45,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960624467] [2023-11-23 15:19:45,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:45,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:45,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:45,677 INFO L87 Difference]: Start difference. First operand 3940 states and 6057 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 15:19:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:46,167 INFO L93 Difference]: Finished difference Result 6688 states and 10283 transitions. [2023-11-23 15:19:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:19:46,168 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 800 [2023-11-23 15:19:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:46,171 INFO L225 Difference]: With dead ends: 6688 [2023-11-23 15:19:46,171 INFO L226 Difference]: Without dead ends: 3946 [2023-11-23 15:19:46,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1615 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 15:19:46,174 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 8 mSDsluCounter, 6914 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8301 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 15:19:46,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8301 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2023-11-23 15:19:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3946. [2023-11-23 15:19:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3862 states have (on average 1.5274469186949766) internal successors, (5899), 3862 states have internal predecessors, (5899), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:19:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6063 transitions. [2023-11-23 15:19:46,524 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6063 transitions. Word has length 800 [2023-11-23 15:19:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:46,525 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 6063 transitions. [2023-11-23 15:19:46,525 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 15:19:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6063 transitions. [2023-11-23 15:19:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2023-11-23 15:19:46,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:46,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:46,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:46,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:46,752 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:46,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1381424770, now seen corresponding path program 2 times [2023-11-23 15:19:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565423737] [2023-11-23 15:19:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-23 15:19:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-23 15:19:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-23 15:19:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 757 [2023-11-23 15:19:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 768 [2023-11-23 15:19:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 15:19:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565423737] [2023-11-23 15:19:47,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565423737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955219617] [2023-11-23 15:19:47,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:19:47,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:47,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:47,505 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 15:19:47,531 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 15:19:48,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:19:48,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:48,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 4334 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:19:48,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 196 proven. 6 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-23 15:19:48,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 15:19:48,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955219617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:48,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:48,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:19:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905856227] [2023-11-23 15:19:48,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:48,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:19:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:19:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:19:48,924 INFO L87 Difference]: Start difference. First operand 3946 states and 6063 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 15:19:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:49,420 INFO L93 Difference]: Finished difference Result 6699 states and 10292 transitions. [2023-11-23 15:19:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:19:49,422 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 803 [2023-11-23 15:19:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:49,426 INFO L225 Difference]: With dead ends: 6699 [2023-11-23 15:19:49,426 INFO L226 Difference]: Without dead ends: 3951 [2023-11-23 15:19:49,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1628 GetRequests, 1621 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 15:19:49,428 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 8 mSDsluCounter, 6912 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8299 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 15:19:49,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8299 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:19:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-11-23 15:19:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3948. [2023-11-23 15:19:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3864 states have (on average 1.5271739130434783) internal successors, (5901), 3864 states have internal predecessors, (5901), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:19:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6065 transitions. [2023-11-23 15:19:49,796 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6065 transitions. Word has length 803 [2023-11-23 15:19:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:49,796 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 6065 transitions. [2023-11-23 15:19:49,796 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 15:19:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6065 transitions. [2023-11-23 15:19:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2023-11-23 15:19:49,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:49,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:49,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-23 15:19:50,017 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,SelfDestructingSolverStorable61 [2023-11-23 15:19:50,017 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:50,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:50,018 INFO L85 PathProgramCache]: Analyzing trace with hash -992584035, now seen corresponding path program 3 times [2023-11-23 15:19:50,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:50,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048909961] [2023-11-23 15:19:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-23 15:19:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-23 15:19:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-23 15:19:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2023-11-23 15:19:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-11-23 15:19:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 15:19:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048909961] [2023-11-23 15:19:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048909961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119032] [2023-11-23 15:19:50,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 15:19:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:50,793 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 15:19:50,818 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 15:19:52,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 15:19:52,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:19:52,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 3553 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 15:19:52,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:19:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 65 proven. 4 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-11-23 15:19:54,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:19:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-23 15:19:54,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:19:54,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:19:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2023-11-23 15:19:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197309388] [2023-11-23 15:19:54,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:19:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:19:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:19:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:19:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:19:54,989 INFO L87 Difference]: Start difference. First operand 3948 states and 6065 transitions. Second operand has 12 states, 12 states have (on average 162.66666666666666) internal successors, (1952), 12 states have internal predecessors, (1952), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 15:19:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:19:57,288 INFO L93 Difference]: Finished difference Result 6892 states and 10591 transitions. [2023-11-23 15:19:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:19:57,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 162.66666666666666) internal successors, (1952), 12 states have internal predecessors, (1952), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 804 [2023-11-23 15:19:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:19:57,293 INFO L225 Difference]: With dead ends: 6892 [2023-11-23 15:19:57,293 INFO L226 Difference]: Without dead ends: 3974 [2023-11-23 15:19:57,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1622 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 15:19:57,296 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 2387 mSDsluCounter, 5944 mSDsCounter, 0 mSdLazyCounter, 5315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 5322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:19:57,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 6851 Invalid, 5322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 5315 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 15:19:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2023-11-23 15:19:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3958. [2023-11-23 15:19:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3874 states have (on average 1.5258131130614352) internal successors, (5911), 3874 states have internal predecessors, (5911), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:19:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 6075 transitions. [2023-11-23 15:19:57,706 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 6075 transitions. Word has length 804 [2023-11-23 15:19:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:19:57,706 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 6075 transitions. [2023-11-23 15:19:57,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 162.66666666666666) internal successors, (1952), 12 states have internal predecessors, (1952), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 15:19:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 6075 transitions. [2023-11-23 15:19:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2023-11-23 15:19:57,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:19:57,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:57,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-23 15:19:57,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:57,929 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:19:57,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:19:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -841170477, now seen corresponding path program 1 times [2023-11-23 15:19:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:19:57,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840523839] [2023-11-23 15:19:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:19:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:19:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:19:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:19:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:19:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:19:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-23 15:19:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-23 15:19:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2023-11-23 15:19:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2023-11-23 15:19:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 770 [2023-11-23 15:19:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:19:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 15:19:58,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:19:58,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840523839] [2023-11-23 15:19:58,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840523839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:19:58,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281555024] [2023-11-23 15:19:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:19:58,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:19:58,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:19:58,780 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 15:19:58,781 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 15:20:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:00,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 4350 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 15:20:00,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 196 proven. 22 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-23 15:20:00,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 15:20:00,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281555024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:00,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-23 15:20:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238134307] [2023-11-23 15:20:00,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 15:20:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 15:20:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:20:00,196 INFO L87 Difference]: Start difference. First operand 3958 states and 6075 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 15:20:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:00,664 INFO L93 Difference]: Finished difference Result 6718 states and 10311 transitions. [2023-11-23 15:20:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:20:00,665 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 805 [2023-11-23 15:20:00,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:00,669 INFO L225 Difference]: With dead ends: 6718 [2023-11-23 15:20:00,669 INFO L226 Difference]: Without dead ends: 3962 [2023-11-23 15:20:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1633 GetRequests, 1623 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 15:20:00,671 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 11 mSDsluCounter, 8319 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9710 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:00,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9710 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2023-11-23 15:20:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3962. [2023-11-23 15:20:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3878 states have (on average 1.5252707581227436) internal successors, (5915), 3878 states have internal predecessors, (5915), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:20:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 6079 transitions. [2023-11-23 15:20:01,074 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 6079 transitions. Word has length 805 [2023-11-23 15:20:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:01,074 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 6079 transitions. [2023-11-23 15:20:01,075 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 15:20:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 6079 transitions. [2023-11-23 15:20:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2023-11-23 15:20:01,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:01,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:01,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-23 15:20:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:01,292 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:01,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 902984595, now seen corresponding path program 2 times [2023-11-23 15:20:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125523557] [2023-11-23 15:20:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:20:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:20:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:20:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-23 15:20:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-23 15:20:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2023-11-23 15:20:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 761 [2023-11-23 15:20:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2023-11-23 15:20:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-23 15:20:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125523557] [2023-11-23 15:20:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125523557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:20:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646049338] [2023-11-23 15:20:02,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:20:02,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:02,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:20:02,082 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 15:20:02,083 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 15:20:03,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:20:03,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:20:03,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 4364 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:20:03,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:20:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-23 15:20:03,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:20:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-23 15:20:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646049338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:20:03,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:20:03,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 15:20:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319431738] [2023-11-23 15:20:03,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:20:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:03,514 INFO L87 Difference]: Start difference. First operand 3962 states and 6079 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 15:20:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:03,956 INFO L93 Difference]: Finished difference Result 6728 states and 10323 transitions. [2023-11-23 15:20:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:20:03,957 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 807 [2023-11-23 15:20:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:03,960 INFO L225 Difference]: With dead ends: 6728 [2023-11-23 15:20:03,960 INFO L226 Difference]: Without dead ends: 3968 [2023-11-23 15:20:03,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1637 GetRequests, 1629 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 15:20:03,972 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 8 mSDsluCounter, 5532 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6919 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:03,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6919 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:20:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2023-11-23 15:20:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3968. [2023-11-23 15:20:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3884 states have (on average 1.5244593202883625) internal successors, (5921), 3884 states have internal predecessors, (5921), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:20:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 6085 transitions. [2023-11-23 15:20:04,380 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 6085 transitions. Word has length 807 [2023-11-23 15:20:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:04,380 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 6085 transitions. [2023-11-23 15:20:04,381 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 15:20:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 6085 transitions. [2023-11-23 15:20:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-11-23 15:20:04,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:04,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:04,409 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 15:20:04,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:20:04,603 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:04,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1657542086, now seen corresponding path program 3 times [2023-11-23 15:20:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374664276] [2023-11-23 15:20:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:20:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:20:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:20:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:20:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:20:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2023-11-23 15:20:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2023-11-23 15:20:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 775 [2023-11-23 15:20:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-11-23 15:20:09,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374664276] [2023-11-23 15:20:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374664276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:09,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:20:09,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 15:20:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108755935] [2023-11-23 15:20:09,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:09,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:20:09,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:20:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:20:09,417 INFO L87 Difference]: Start difference. First operand 3968 states and 6085 transitions. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 15:20:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:11,165 INFO L93 Difference]: Finished difference Result 9378 states and 14438 transitions. [2023-11-23 15:20:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 810 [2023-11-23 15:20:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:11,171 INFO L225 Difference]: With dead ends: 9378 [2023-11-23 15:20:11,171 INFO L226 Difference]: Without dead ends: 6258 [2023-11-23 15:20:11,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:11,174 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1994 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:11,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 3373 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:20:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2023-11-23 15:20:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 3982. [2023-11-23 15:20:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3898 states have (on average 1.5225756798358132) internal successors, (5935), 3898 states have internal predecessors, (5935), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:20:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 6099 transitions. [2023-11-23 15:20:11,548 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 6099 transitions. Word has length 810 [2023-11-23 15:20:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:11,548 INFO L495 AbstractCegarLoop]: Abstraction has 3982 states and 6099 transitions. [2023-11-23 15:20:11,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 15:20:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 6099 transitions. [2023-11-23 15:20:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-11-23 15:20:11,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:11,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-23 15:20:11,556 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:11,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2102155830, now seen corresponding path program 1 times [2023-11-23 15:20:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:11,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972131799] [2023-11-23 15:20:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:20:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:20:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:20:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:20:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:20:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2023-11-23 15:20:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2023-11-23 15:20:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 775 [2023-11-23 15:20:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-23 15:20:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972131799] [2023-11-23 15:20:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972131799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:20:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:20:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713410308] [2023-11-23 15:20:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:20:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:16,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:20:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:16,225 INFO L87 Difference]: Start difference. First operand 3982 states and 6099 transitions. Second operand has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 15:20:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:17,411 INFO L93 Difference]: Finished difference Result 11446 states and 17520 transitions. [2023-11-23 15:20:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 15:20:17,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 810 [2023-11-23 15:20:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:17,420 INFO L225 Difference]: With dead ends: 11446 [2023-11-23 15:20:17,421 INFO L226 Difference]: Without dead ends: 8550 [2023-11-23 15:20:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:20:17,425 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 3535 mSDsluCounter, 7235 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3542 SdHoareTripleChecker+Valid, 9460 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:17,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3542 Valid, 9460 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 15:20:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8550 states. [2023-11-23 15:20:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8550 to 4002. [2023-11-23 15:20:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 3918 states have (on average 1.5209290454313424) internal successors, (5959), 3918 states have internal predecessors, (5959), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:20:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 6123 transitions. [2023-11-23 15:20:17,864 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 6123 transitions. Word has length 810 [2023-11-23 15:20:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:17,864 INFO L495 AbstractCegarLoop]: Abstraction has 4002 states and 6123 transitions. [2023-11-23 15:20:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 15:20:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 6123 transitions. [2023-11-23 15:20:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-11-23 15:20:17,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:17,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-11-23 15:20:17,872 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:17,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1190568208, now seen corresponding path program 1 times [2023-11-23 15:20:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315566632] [2023-11-23 15:20:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:17,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:20:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:20:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:20:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-23 15:20:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-23 15:20:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2023-11-23 15:20:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2023-11-23 15:20:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 775 [2023-11-23 15:20:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-23 15:20:21,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315566632] [2023-11-23 15:20:21,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315566632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:21,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:20:21,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 15:20:21,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335227289] [2023-11-23 15:20:21,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:21,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:20:21,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:21,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:20:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:20:21,244 INFO L87 Difference]: Start difference. First operand 4002 states and 6123 transitions. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 15:20:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:21,667 INFO L93 Difference]: Finished difference Result 6814 states and 10409 transitions. [2023-11-23 15:20:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:20:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 810 [2023-11-23 15:20:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:21,671 INFO L225 Difference]: With dead ends: 6814 [2023-11-23 15:20:21,671 INFO L226 Difference]: Without dead ends: 4030 [2023-11-23 15:20:21,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 15:20:21,674 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1584 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:21,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 2977 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 15:20:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2023-11-23 15:20:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 4002. [2023-11-23 15:20:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 3918 states have (on average 1.5199081163859112) internal successors, (5955), 3918 states have internal predecessors, (5955), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:20:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 6119 transitions. [2023-11-23 15:20:22,096 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 6119 transitions. Word has length 810 [2023-11-23 15:20:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:22,096 INFO L495 AbstractCegarLoop]: Abstraction has 4002 states and 6119 transitions. [2023-11-23 15:20:22,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 15:20:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 6119 transitions. [2023-11-23 15:20:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2023-11-23 15:20:22,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:22,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:22,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-23 15:20:22,104 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:22,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash -748096498, now seen corresponding path program 1 times [2023-11-23 15:20:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261138971] [2023-11-23 15:20:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:22,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-23 15:20:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-23 15:20:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-23 15:20:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-23 15:20:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-11-23 15:20:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-23 15:20:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2023-11-23 15:20:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2023-11-23 15:20:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-11-23 15:20:26,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:26,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261138971] [2023-11-23 15:20:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261138971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:26,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:20:26,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:20:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376952655] [2023-11-23 15:20:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:26,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:20:26,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:20:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:20:26,928 INFO L87 Difference]: Start difference. First operand 4002 states and 6119 transitions. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 15:20:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:28,473 INFO L93 Difference]: Finished difference Result 7152 states and 10921 transitions. [2023-11-23 15:20:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:20:28,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 811 [2023-11-23 15:20:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:28,477 INFO L225 Difference]: With dead ends: 7152 [2023-11-23 15:20:28,477 INFO L226 Difference]: Without dead ends: 4058 [2023-11-23 15:20:28,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:20:28,479 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 3307 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:28,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 2879 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 15:20:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2023-11-23 15:20:28,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 4030. [2023-11-23 15:20:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 3946 states have (on average 1.5126710593005575) internal successors, (5969), 3946 states have internal predecessors, (5969), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 15:20:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 6133 transitions. [2023-11-23 15:20:28,873 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 6133 transitions. Word has length 811 [2023-11-23 15:20:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:28,874 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 6133 transitions. [2023-11-23 15:20:28,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 15:20:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 6133 transitions. [2023-11-23 15:20:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2023-11-23 15:20:28,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:28,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:28,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-23 15:20:28,881 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:28,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1877459936, now seen corresponding path program 1 times [2023-11-23 15:20:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282486270] [2023-11-23 15:20:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:20:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:20:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2023-11-23 15:20:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2023-11-23 15:20:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2023-11-23 15:20:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-23 15:20:35,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282486270] [2023-11-23 15:20:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282486270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:35,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:20:35,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 15:20:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252767348] [2023-11-23 15:20:35,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:35,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:20:35,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:20:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:20:35,908 INFO L87 Difference]: Start difference. First operand 4030 states and 6133 transitions. Second operand has 10 states, 10 states have (on average 71.2) internal successors, (712), 10 states have internal predecessors, (712), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 15:20:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:38,641 INFO L93 Difference]: Finished difference Result 18624 states and 28448 transitions. [2023-11-23 15:20:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 15:20:38,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 71.2) internal successors, (712), 10 states have internal predecessors, (712), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 813 [2023-11-23 15:20:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:38,657 INFO L225 Difference]: With dead ends: 18624 [2023-11-23 15:20:38,657 INFO L226 Difference]: Without dead ends: 15824 [2023-11-23 15:20:38,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-11-23 15:20:38,661 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 7821 mSDsluCounter, 13024 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7821 SdHoareTripleChecker+Valid, 15747 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:38,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7821 Valid, 15747 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 15:20:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15824 states. [2023-11-23 15:20:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15824 to 5846. [2023-11-23 15:20:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5846 states, 5732 states have (on average 1.520062805303559) internal successors, (8713), 5732 states have internal predecessors, (8713), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-23 15:20:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 8937 transitions. [2023-11-23 15:20:39,354 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 8937 transitions. Word has length 813 [2023-11-23 15:20:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:39,355 INFO L495 AbstractCegarLoop]: Abstraction has 5846 states and 8937 transitions. [2023-11-23 15:20:39,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.2) internal successors, (712), 10 states have internal predecessors, (712), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 15:20:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 8937 transitions. [2023-11-23 15:20:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2023-11-23 15:20:39,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:39,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:39,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-11-23 15:20:39,363 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:39,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash -172415300, now seen corresponding path program 1 times [2023-11-23 15:20:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:39,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162607728] [2023-11-23 15:20:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:39,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:20:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-23 15:20:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-23 15:20:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-23 15:20:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-23 15:20:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-23 15:20:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-23 15:20:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-23 15:20:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2023-11-23 15:20:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2023-11-23 15:20:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2023-11-23 15:20:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:20:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-11-23 15:20:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:20:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162607728] [2023-11-23 15:20:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162607728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:20:44,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:20:44,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 15:20:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894962084] [2023-11-23 15:20:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:20:44,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:20:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:20:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:20:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:20:44,726 INFO L87 Difference]: Start difference. First operand 5846 states and 8937 transitions. Second operand has 9 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 15:20:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:20:48,855 INFO L93 Difference]: Finished difference Result 21438 states and 32705 transitions. [2023-11-23 15:20:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:20:48,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 813 [2023-11-23 15:20:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:20:48,869 INFO L225 Difference]: With dead ends: 21438 [2023-11-23 15:20:48,869 INFO L226 Difference]: Without dead ends: 16310 [2023-11-23 15:20:48,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:20:48,872 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 2699 mSDsluCounter, 7708 mSDsCounter, 0 mSdLazyCounter, 5096 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 9226 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:20:48,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 9226 Invalid, 5106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 5096 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 15:20:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16310 states. [2023-11-23 15:20:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16310 to 6026. [2023-11-23 15:20:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 5912 states have (on average 1.5150541271989175) internal successors, (8957), 5912 states have internal predecessors, (8957), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-23 15:20:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 9181 transitions. [2023-11-23 15:20:49,581 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 9181 transitions. Word has length 813 [2023-11-23 15:20:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:20:49,582 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 9181 transitions. [2023-11-23 15:20:49,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 15:20:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 9181 transitions. [2023-11-23 15:20:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2023-11-23 15:20:49,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:20:49,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:49,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-11-23 15:20:49,591 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:20:49,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:20:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -882382578, now seen corresponding path program 1 times [2023-11-23 15:20:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:20:49,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404340476] [2023-11-23 15:20:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:20:49,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15