./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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_arbitrated_fifos_n2d8w8.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 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-23 00:02:32,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 00:02:32,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 00:02:32,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 00:02:32,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 00:02:32,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 00:02:32,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 00:02:32,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 00:02:32,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 00:02:32,623 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 00:02:32,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 00:02:32,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 00:02:32,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 00:02:32,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 00:02:32,625 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 00:02:32,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 00:02:32,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 00:02:32,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 00:02:32,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 00:02:32,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 00:02:32,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 00:02:32,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 00:02:32,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 00:02:32,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 00:02:32,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 00:02:32,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 00:02:32,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 00:02:32,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 00:02:32,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 00:02:32,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 00:02:32,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 00:02:32,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 00:02:32,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 00:02:32,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 00:02:32,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 00:02:32,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 00:02:32,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 00:02:32,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 00:02:32,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 00:02:32,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 00:02:32,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 00:02:32,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 00:02:32,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 00:02:32,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 00:02:32,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 00:02:32,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-23 00:02:33,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 00:02:34,226 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 00:02:34,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-23 00:02:34,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a589b4b3/d2b8aebb0af94c06bc8d29fbc31882fe/FLAGc337e88a5 [2023-11-23 00:02:34,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a589b4b3/d2b8aebb0af94c06bc8d29fbc31882fe [2023-11-23 00:02:34,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 00:02:34,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 00:02:34,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 00:02:34,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 00:02:34,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 00:02:34,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:34,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396432ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34, skipping insertion in model container [2023-11-23 00:02:34,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:34,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 00:02:34,464 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_arbitrated_fifos_n2d8w8.c[1268,1281] [2023-11-23 00:02:34,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 00:02:34,695 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 00:02:34,704 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_arbitrated_fifos_n2d8w8.c[1268,1281] [2023-11-23 00:02:34,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 00:02:34,801 INFO L206 MainTranslator]: Completed translation [2023-11-23 00:02:34,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34 WrapperNode [2023-11-23 00:02:34,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 00:02:34,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 00:02:34,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 00:02:34,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 00:02:34,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:34,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,096 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2735 [2023-11-23 00:02:35,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 00:02:35,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 00:02:35,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 00:02:35,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 00:02:35,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 00:02:35,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 00:02:35,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 00:02:35,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 00:02:35,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (1/1) ... [2023-11-23 00:02:35,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 00:02:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:35,317 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 00:02:35,359 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 00:02:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 00:02:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 00:02:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 00:02:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 00:02:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 00:02:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 00:02:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 00:02:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 00:02:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 00:02:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 00:02:35,593 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 00:02:35,597 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 00:02:37,050 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 00:02:37,094 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 00:02:37,095 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-23 00:02:37,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:02:37 BoogieIcfgContainer [2023-11-23 00:02:37,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 00:02:37,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 00:02:37,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 00:02:37,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 00:02:37,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:02:34" (1/3) ... [2023-11-23 00:02:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539659e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:02:37, skipping insertion in model container [2023-11-23 00:02:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:02:34" (2/3) ... [2023-11-23 00:02:37,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539659e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:02:37, skipping insertion in model container [2023-11-23 00:02:37,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:02:37" (3/3) ... [2023-11-23 00:02:37,102 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-23 00:02:37,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 00:02:37,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 00:02:37,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 00:02:37,163 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;@6f070831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 00:02:37,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 00:02:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 566 states, 558 states have (on average 1.6648745519713262) internal successors, (929), 559 states have internal predecessors, (929), 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 00:02:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-23 00:02:37,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:37,198 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] [2023-11-23 00:02:37,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1439584974, now seen corresponding path program 1 times [2023-11-23 00:02:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225754533] [2023-11-23 00:02:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:37,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 00:02:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 00:02:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 00:02:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:02:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 00:02:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:37,557 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 00:02:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225754533] [2023-11-23 00:02:37,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225754533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:37,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:37,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 00:02:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441966831] [2023-11-23 00:02:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:37,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 00:02:37,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 00:02:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 00:02:37,586 INFO L87 Difference]: Start difference. First operand has 566 states, 558 states have (on average 1.6648745519713262) internal successors, (929), 559 states have internal predecessors, (929), 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 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 00:02:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:37,634 INFO L93 Difference]: Finished difference Result 1125 states and 1873 transitions. [2023-11-23 00:02:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 00:02:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 240 [2023-11-23 00:02:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:37,646 INFO L225 Difference]: With dead ends: 1125 [2023-11-23 00:02:37,646 INFO L226 Difference]: Without dead ends: 564 [2023-11-23 00:02:37,650 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 00:02:37,652 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:37,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 920 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-23 00:02:37,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-23 00:02:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 557 states have (on average 1.6481149012567324) internal successors, (918), 557 states have internal predecessors, (918), 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 00:02:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 928 transitions. [2023-11-23 00:02:37,703 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 928 transitions. Word has length 240 [2023-11-23 00:02:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 928 transitions. [2023-11-23 00:02:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 00:02:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 928 transitions. [2023-11-23 00:02:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-23 00:02:37,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:37,711 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] [2023-11-23 00:02:37,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 00:02:37,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:37,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 108452840, now seen corresponding path program 1 times [2023-11-23 00:02:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:37,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976231701] [2023-11-23 00:02:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 00:02:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 00:02:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 00:02:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:02:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 00:02:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,159 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 00:02:38,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976231701] [2023-11-23 00:02:38,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976231701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:38,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 00:02:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886916342] [2023-11-23 00:02:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:02:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:02:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 00:02:38,162 INFO L87 Difference]: Start difference. First operand 564 states and 928 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 00:02:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:38,193 INFO L93 Difference]: Finished difference Result 1127 states and 1855 transitions. [2023-11-23 00:02:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:02:38,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 240 [2023-11-23 00:02:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:38,195 INFO L225 Difference]: With dead ends: 1127 [2023-11-23 00:02:38,195 INFO L226 Difference]: Without dead ends: 568 [2023-11-23 00:02:38,197 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 00:02:38,198 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 5 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:38,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1836 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-23 00:02:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 565. [2023-11-23 00:02:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 558 states have (on average 1.646953405017921) internal successors, (919), 558 states have internal predecessors, (919), 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 00:02:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 929 transitions. [2023-11-23 00:02:38,212 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 929 transitions. Word has length 240 [2023-11-23 00:02:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 929 transitions. [2023-11-23 00:02:38,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 00:02:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 929 transitions. [2023-11-23 00:02:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-23 00:02:38,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:38,215 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] [2023-11-23 00:02:38,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 00:02:38,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:38,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash 119274146, now seen corresponding path program 1 times [2023-11-23 00:02:38,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:38,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944291371] [2023-11-23 00:02:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 00:02:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 00:02:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 00:02:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 00:02:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 00:02:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,546 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 00:02:38,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:38,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944291371] [2023-11-23 00:02:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944291371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:38,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399049104] [2023-11-23 00:02:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:38,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:38,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:38,560 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 00:02:38,607 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 00:02:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:38,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 00:02:38,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:39,016 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 00:02:39,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:02:39,061 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 00:02:39,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399049104] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:39,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:02:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-23 00:02:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816175846] [2023-11-23 00:02:39,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:39,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:02:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:02:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:02:39,067 INFO L87 Difference]: Start difference. First operand 565 states and 929 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 00:02:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:39,099 INFO L93 Difference]: Finished difference Result 1108 states and 1823 transitions. [2023-11-23 00:02:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:02:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 243 [2023-11-23 00:02:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:39,103 INFO L225 Difference]: With dead ends: 1108 [2023-11-23 00:02:39,104 INFO L226 Difference]: Without dead ends: 566 [2023-11-23 00:02:39,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 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 00:02:39,106 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 5 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:39,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1831 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:39,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-23 00:02:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2023-11-23 00:02:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 559 states have (on average 1.6457960644007155) internal successors, (920), 559 states have internal predecessors, (920), 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 00:02:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 930 transitions. [2023-11-23 00:02:39,120 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 930 transitions. Word has length 243 [2023-11-23 00:02:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:39,120 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 930 transitions. [2023-11-23 00:02:39,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 00:02:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 930 transitions. [2023-11-23 00:02:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-23 00:02:39,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:39,123 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] [2023-11-23 00:02:39,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 00:02:39,337 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 00:02:39,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:39,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1885165705, now seen corresponding path program 1 times [2023-11-23 00:02:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:39,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887428015] [2023-11-23 00:02:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 00:02:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 00:02:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 00:02:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 00:02:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 00:02:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:39,699 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 00:02:39,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:39,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887428015] [2023-11-23 00:02:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887428015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264064888] [2023-11-23 00:02:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:39,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:39,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:39,701 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 00:02:39,723 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 00:02:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:40,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 00:02:40,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:40,178 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 00:02:40,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:02:40,694 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 00:02:40,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264064888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:02:40,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:02:40,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2023-11-23 00:02:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072757979] [2023-11-23 00:02:40,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:02:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 00:02:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 00:02:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-23 00:02:40,702 INFO L87 Difference]: Start difference. First operand 566 states and 930 transitions. Second operand has 12 states, 12 states have (on average 30.166666666666668) internal successors, (362), 12 states have internal predecessors, (362), 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 00:02:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:41,694 INFO L93 Difference]: Finished difference Result 1676 states and 2759 transitions. [2023-11-23 00:02:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:02:41,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 30.166666666666668) internal successors, (362), 12 states have internal predecessors, (362), 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 246 [2023-11-23 00:02:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:41,698 INFO L225 Difference]: With dead ends: 1676 [2023-11-23 00:02:41,698 INFO L226 Difference]: Without dead ends: 1116 [2023-11-23 00:02:41,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-23 00:02:41,699 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 2469 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:41,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 4043 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 00:02:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-11-23 00:02:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 745. [2023-11-23 00:02:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 733 states have (on average 1.641200545702592) internal successors, (1203), 733 states have internal predecessors, (1203), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 00:02:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1223 transitions. [2023-11-23 00:02:41,718 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1223 transitions. Word has length 246 [2023-11-23 00:02:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:41,719 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1223 transitions. [2023-11-23 00:02:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.166666666666668) internal successors, (362), 12 states have internal predecessors, (362), 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 00:02:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1223 transitions. [2023-11-23 00:02:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-11-23 00:02:41,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:41,722 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] [2023-11-23 00:02:41,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 00:02:41,935 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 00:02:41,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:41,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1192596475, now seen corresponding path program 1 times [2023-11-23 00:02:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:41,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303342982] [2023-11-23 00:02:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 00:02:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 00:02:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 00:02:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 00:02:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 00:02:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 00:02:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303342982] [2023-11-23 00:02:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303342982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269560743] [2023-11-23 00:02:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:42,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:42,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:42,240 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 00:02:42,263 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 00:02:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:42,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 00:02:42,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 00:02:42,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:02:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 00:02:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269560743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:02:42,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:02:42,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-23 00:02:42,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929486805] [2023-11-23 00:02:42,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:02:42,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 00:02:42,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 00:02:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 00:02:42,630 INFO L87 Difference]: Start difference. First operand 745 states and 1223 transitions. Second operand has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 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 00:02:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:42,700 INFO L93 Difference]: Finished difference Result 1511 states and 2485 transitions. [2023-11-23 00:02:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:02:42,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 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 250 [2023-11-23 00:02:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:42,703 INFO L225 Difference]: With dead ends: 1511 [2023-11-23 00:02:42,703 INFO L226 Difference]: Without dead ends: 776 [2023-11-23 00:02:42,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 505 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 00:02:42,705 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 49 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:42,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 4612 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2023-11-23 00:02:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 773. [2023-11-23 00:02:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 761 states have (on average 1.636005256241787) internal successors, (1245), 761 states have internal predecessors, (1245), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 00:02:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1265 transitions. [2023-11-23 00:02:42,719 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1265 transitions. Word has length 250 [2023-11-23 00:02:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:42,719 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1265 transitions. [2023-11-23 00:02:42,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 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 00:02:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1265 transitions. [2023-11-23 00:02:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-23 00:02:42,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:42,722 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] [2023-11-23 00:02:42,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 00:02:42,939 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 00:02:42,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:42,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1576810444, now seen corresponding path program 2 times [2023-11-23 00:02:42,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:42,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419945418] [2023-11-23 00:02:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:42,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 00:02:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 00:02:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 00:02:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 00:02:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 00:02:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 00:02:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419945418] [2023-11-23 00:02:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419945418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53312621] [2023-11-23 00:02:43,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:02:43,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:43,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:43,228 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 00:02:43,241 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 00:02:43,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:02:43,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:02:43,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 00:02:43,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 00:02:43,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:02:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53312621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:43,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:02:43,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-23 00:02:43,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194444940] [2023-11-23 00:02:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:43,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 00:02:43,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:43,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 00:02:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 00:02:43,809 INFO L87 Difference]: Start difference. First operand 773 states and 1265 transitions. Second operand has 7 states, 7 states have (on average 32.142857142857146) internal successors, (225), 6 states have internal predecessors, (225), 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 00:02:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:44,710 INFO L93 Difference]: Finished difference Result 1990 states and 3267 transitions. [2023-11-23 00:02:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 00:02:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.142857142857146) internal successors, (225), 6 states have internal predecessors, (225), 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 262 [2023-11-23 00:02:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:44,715 INFO L225 Difference]: With dead ends: 1990 [2023-11-23 00:02:44,715 INFO L226 Difference]: Without dead ends: 1386 [2023-11-23 00:02:44,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-23 00:02:44,716 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 2343 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:44,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 3650 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 00:02:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2023-11-23 00:02:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 785. [2023-11-23 00:02:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 773 states have (on average 1.628719275549806) internal successors, (1259), 773 states have internal predecessors, (1259), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 00:02:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1279 transitions. [2023-11-23 00:02:44,735 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1279 transitions. Word has length 262 [2023-11-23 00:02:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:44,736 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1279 transitions. [2023-11-23 00:02:44,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.142857142857146) internal successors, (225), 6 states have internal predecessors, (225), 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 00:02:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1279 transitions. [2023-11-23 00:02:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-23 00:02:44,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:44,739 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] [2023-11-23 00:02:44,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 00:02:44,952 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 00:02:44,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:44,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1371880378, now seen corresponding path program 1 times [2023-11-23 00:02:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:44,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283273887] [2023-11-23 00:02:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 00:02:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 00:02:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 00:02:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 00:02:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 00:02:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 00:02:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283273887] [2023-11-23 00:02:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283273887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151359091] [2023-11-23 00:02:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:45,369 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 00:02:45,392 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 00:02:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:45,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 00:02:45,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 00:02:45,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:02:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 00:02:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151359091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:02:45,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:02:45,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2023-11-23 00:02:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866981383] [2023-11-23 00:02:45,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:02:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 00:02:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 00:02:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-23 00:02:45,852 INFO L87 Difference]: Start difference. First operand 785 states and 1279 transitions. Second operand has 15 states, 15 states have (on average 17.266666666666666) internal successors, (259), 15 states have internal predecessors, (259), 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 00:02:46,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:46,055 INFO L93 Difference]: Finished difference Result 1576 states and 2572 transitions. [2023-11-23 00:02:46,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 00:02:46,056 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.266666666666666) internal successors, (259), 15 states have internal predecessors, (259), 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 263 [2023-11-23 00:02:46,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:46,059 INFO L225 Difference]: With dead ends: 1576 [2023-11-23 00:02:46,059 INFO L226 Difference]: Without dead ends: 805 [2023-11-23 00:02:46,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-23 00:02:46,061 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 72 mSDsluCounter, 8337 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 9268 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:46,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 9268 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:46,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-23 00:02:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-11-23 00:02:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 793 states have (on average 1.6254728877679698) internal successors, (1289), 793 states have internal predecessors, (1289), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 00:02:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1309 transitions. [2023-11-23 00:02:46,079 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1309 transitions. Word has length 263 [2023-11-23 00:02:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:46,079 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1309 transitions. [2023-11-23 00:02:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.266666666666666) internal successors, (259), 15 states have internal predecessors, (259), 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 00:02:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1309 transitions. [2023-11-23 00:02:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-11-23 00:02:46,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:46,082 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 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] [2023-11-23 00:02:46,098 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 00:02:46,294 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 00:02:46,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:46,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 249501504, now seen corresponding path program 2 times [2023-11-23 00:02:46,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:46,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127995200] [2023-11-23 00:02:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:46,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 00:02:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 00:02:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 00:02:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:46,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 00:02:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 00:02:46,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:46,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127995200] [2023-11-23 00:02:46,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127995200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:46,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675139978] [2023-11-23 00:02:46,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:02:46,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:46,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:46,662 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 00:02:46,686 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 00:02:46,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:02:46,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:02:46,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 00:02:46,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 00:02:47,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:02:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675139978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:47,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:02:47,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-23 00:02:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153255815] [2023-11-23 00:02:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:02:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:02:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-23 00:02:47,509 INFO L87 Difference]: Start difference. First operand 805 states and 1309 transitions. Second operand has 8 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 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 00:02:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:48,376 INFO L93 Difference]: Finished difference Result 1864 states and 3046 transitions. [2023-11-23 00:02:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 00:02:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 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 278 [2023-11-23 00:02:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:48,381 INFO L225 Difference]: With dead ends: 1864 [2023-11-23 00:02:48,382 INFO L226 Difference]: Without dead ends: 1365 [2023-11-23 00:02:48,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-23 00:02:48,383 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 2478 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 3977 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:48,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 3977 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 00:02:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2023-11-23 00:02:48,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 999. [2023-11-23 00:02:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 982 states have (on average 1.6211812627291242) internal successors, (1592), 982 states have internal predecessors, (1592), 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 00:02:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1622 transitions. [2023-11-23 00:02:48,403 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1622 transitions. Word has length 278 [2023-11-23 00:02:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:48,404 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1622 transitions. [2023-11-23 00:02:48,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 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 00:02:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1622 transitions. [2023-11-23 00:02:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-11-23 00:02:48,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:48,426 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 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] [2023-11-23 00:02:48,439 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 00:02:48,639 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 00:02:48,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:48,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash 221001214, now seen corresponding path program 1 times [2023-11-23 00:02:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:48,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979126106] [2023-11-23 00:02:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 00:02:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 00:02:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 00:02:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 00:02:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 00:02:48,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979126106] [2023-11-23 00:02:48,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979126106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256236560] [2023-11-23 00:02:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:48,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:48,999 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 00:02:49,020 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 00:02:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:49,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 00:02:49,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 00:02:49,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:02:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 00:02:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256236560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:02:49,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:02:49,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-23 00:02:49,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389720771] [2023-11-23 00:02:49,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:02:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 00:02:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 00:02:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-23 00:02:49,483 INFO L87 Difference]: Start difference. First operand 999 states and 1622 transitions. Second operand has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 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 00:02:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:49,674 INFO L93 Difference]: Finished difference Result 1946 states and 3176 transitions. [2023-11-23 00:02:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 00:02:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 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 278 [2023-11-23 00:02:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:49,678 INFO L225 Difference]: With dead ends: 1946 [2023-11-23 00:02:49,678 INFO L226 Difference]: Without dead ends: 1047 [2023-11-23 00:02:49,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:02:49,679 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 114 mSDsluCounter, 9435 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 10385 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:49,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 10385 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:49,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-11-23 00:02:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1047. [2023-11-23 00:02:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1030 states have (on average 1.6155339805825242) internal successors, (1664), 1030 states have internal predecessors, (1664), 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 00:02:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1694 transitions. [2023-11-23 00:02:49,705 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1694 transitions. Word has length 278 [2023-11-23 00:02:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:49,705 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1694 transitions. [2023-11-23 00:02:49,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 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 00:02:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1694 transitions. [2023-11-23 00:02:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-11-23 00:02:49,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:49,707 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:49,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 00:02:49,921 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 00:02:49,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:49,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1594191038, now seen corresponding path program 2 times [2023-11-23 00:02:49,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:49,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661208138] [2023-11-23 00:02:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:49,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:50,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661208138] [2023-11-23 00:02:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661208138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:50,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:50,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 00:02:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980005150] [2023-11-23 00:02:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:02:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:02:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 00:02:50,459 INFO L87 Difference]: Start difference. First operand 1047 states and 1694 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 00:02:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:50,493 INFO L93 Difference]: Finished difference Result 1051 states and 1698 transitions. [2023-11-23 00:02:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 290 [2023-11-23 00:02:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:50,496 INFO L225 Difference]: With dead ends: 1051 [2023-11-23 00:02:50,497 INFO L226 Difference]: Without dead ends: 1049 [2023-11-23 00:02:50,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 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 00:02:50,498 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:50,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2749 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-11-23 00:02:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1049. [2023-11-23 00:02:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1032 states have (on average 1.6143410852713178) internal successors, (1666), 1032 states have internal predecessors, (1666), 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 00:02:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1696 transitions. [2023-11-23 00:02:50,531 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1696 transitions. Word has length 290 [2023-11-23 00:02:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:50,532 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1696 transitions. [2023-11-23 00:02:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 00:02:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1696 transitions. [2023-11-23 00:02:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-23 00:02:50,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:50,534 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:50,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 00:02:50,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:50,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2117959152, now seen corresponding path program 1 times [2023-11-23 00:02:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:50,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967369215] [2023-11-23 00:02:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967369215] [2023-11-23 00:02:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967369215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 00:02:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508649944] [2023-11-23 00:02:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:50,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:02:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:02:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 00:02:50,887 INFO L87 Difference]: Start difference. First operand 1049 states and 1696 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 00:02:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:50,923 INFO L93 Difference]: Finished difference Result 1553 states and 2520 transitions. [2023-11-23 00:02:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 291 [2023-11-23 00:02:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:50,926 INFO L225 Difference]: With dead ends: 1553 [2023-11-23 00:02:50,926 INFO L226 Difference]: Without dead ends: 1052 [2023-11-23 00:02:50,927 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 00:02:50,928 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:50,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2747 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2023-11-23 00:02:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1051. [2023-11-23 00:02:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 1.6131528046421664) internal successors, (1668), 1034 states have internal predecessors, (1668), 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 00:02:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1698 transitions. [2023-11-23 00:02:50,948 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1698 transitions. Word has length 291 [2023-11-23 00:02:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:50,948 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1698 transitions. [2023-11-23 00:02:50,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 00:02:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1698 transitions. [2023-11-23 00:02:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-23 00:02:50,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:50,950 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:50,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 00:02:50,951 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:50,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1442655464, now seen corresponding path program 1 times [2023-11-23 00:02:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118362036] [2023-11-23 00:02:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118362036] [2023-11-23 00:02:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118362036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:51,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:51,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 00:02:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920008523] [2023-11-23 00:02:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:51,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:02:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:02:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 00:02:51,449 INFO L87 Difference]: Start difference. First operand 1051 states and 1698 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 00:02:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:51,589 INFO L93 Difference]: Finished difference Result 1565 states and 2535 transitions. [2023-11-23 00:02:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 292 [2023-11-23 00:02:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:51,592 INFO L225 Difference]: With dead ends: 1565 [2023-11-23 00:02:51,592 INFO L226 Difference]: Without dead ends: 1051 [2023-11-23 00:02:51,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 00:02:51,593 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 792 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:51,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1678 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2023-11-23 00:02:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2023-11-23 00:02:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 1.6102514506769825) internal successors, (1665), 1034 states have internal predecessors, (1665), 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 00:02:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1695 transitions. [2023-11-23 00:02:51,614 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1695 transitions. Word has length 292 [2023-11-23 00:02:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:51,614 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1695 transitions. [2023-11-23 00:02:51,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 00:02:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1695 transitions. [2023-11-23 00:02:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-23 00:02:51,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:51,616 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:51,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 00:02:51,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:51,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -363506974, now seen corresponding path program 1 times [2023-11-23 00:02:51,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:51,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725059649] [2023-11-23 00:02:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:51,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725059649] [2023-11-23 00:02:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725059649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:51,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:51,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 00:02:51,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535644052] [2023-11-23 00:02:51,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:51,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:02:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:51,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:02:51,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 00:02:51,889 INFO L87 Difference]: Start difference. First operand 1051 states and 1695 transitions. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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 00:02:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:52,036 INFO L93 Difference]: Finished difference Result 1554 states and 2516 transitions. [2023-11-23 00:02:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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 293 [2023-11-23 00:02:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:52,039 INFO L225 Difference]: With dead ends: 1554 [2023-11-23 00:02:52,039 INFO L226 Difference]: Without dead ends: 1051 [2023-11-23 00:02:52,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 00:02:52,041 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1664 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:52,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 1678 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:52,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2023-11-23 00:02:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2023-11-23 00:02:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 1.609284332688588) internal successors, (1664), 1034 states have internal predecessors, (1664), 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 00:02:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1694 transitions. [2023-11-23 00:02:52,064 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1694 transitions. Word has length 293 [2023-11-23 00:02:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:52,065 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1694 transitions. [2023-11-23 00:02:52,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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 00:02:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1694 transitions. [2023-11-23 00:02:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-23 00:02:52,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:52,067 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:52,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 00:02:52,067 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:52,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:52,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1895372510, now seen corresponding path program 1 times [2023-11-23 00:02:52,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:52,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100898804] [2023-11-23 00:02:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:52,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:52,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:52,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100898804] [2023-11-23 00:02:52,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100898804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:52,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:52,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 00:02:52,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488385966] [2023-11-23 00:02:52,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:52,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:02:52,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:52,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:02:52,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 00:02:52,545 INFO L87 Difference]: Start difference. First operand 1051 states and 1694 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 00:02:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:52,704 INFO L93 Difference]: Finished difference Result 1565 states and 2529 transitions. [2023-11-23 00:02:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:52,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 294 [2023-11-23 00:02:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:52,707 INFO L225 Difference]: With dead ends: 1565 [2023-11-23 00:02:52,708 INFO L226 Difference]: Without dead ends: 1051 [2023-11-23 00:02:52,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 00:02:52,709 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1694 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1678 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 00:02:52,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1678 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2023-11-23 00:02:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2023-11-23 00:02:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 1.6063829787234043) internal successors, (1661), 1034 states have internal predecessors, (1661), 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 00:02:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1691 transitions. [2023-11-23 00:02:52,734 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1691 transitions. Word has length 294 [2023-11-23 00:02:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:52,735 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1691 transitions. [2023-11-23 00:02:52,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 00:02:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1691 transitions. [2023-11-23 00:02:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-23 00:02:52,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:52,737 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:52,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 00:02:52,737 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:52,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash -502098020, now seen corresponding path program 1 times [2023-11-23 00:02:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:52,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401383984] [2023-11-23 00:02:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:53,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:53,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401383984] [2023-11-23 00:02:53,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401383984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:53,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:53,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 00:02:53,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595474087] [2023-11-23 00:02:53,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:53,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:02:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:02:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 00:02:53,101 INFO L87 Difference]: Start difference. First operand 1051 states and 1691 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 00:02:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:53,267 INFO L93 Difference]: Finished difference Result 1554 states and 2510 transitions. [2023-11-23 00:02:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 294 [2023-11-23 00:02:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:53,271 INFO L225 Difference]: With dead ends: 1554 [2023-11-23 00:02:53,271 INFO L226 Difference]: Without dead ends: 1051 [2023-11-23 00:02:53,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 00:02:53,272 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 767 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:53,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1678 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2023-11-23 00:02:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2023-11-23 00:02:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 1.6054158607350097) internal successors, (1660), 1034 states have internal predecessors, (1660), 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 00:02:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1690 transitions. [2023-11-23 00:02:53,297 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1690 transitions. Word has length 294 [2023-11-23 00:02:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:53,297 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1690 transitions. [2023-11-23 00:02:53,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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 00:02:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1690 transitions. [2023-11-23 00:02:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-23 00:02:53,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:53,299 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2023-11-23 00:02:53,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 00:02:53,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:53,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:53,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1644600486, now seen corresponding path program 1 times [2023-11-23 00:02:53,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:53,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980409901] [2023-11-23 00:02:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:53,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-23 00:02:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980409901] [2023-11-23 00:02:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980409901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 00:02:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922936582] [2023-11-23 00:02:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:02:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:02:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:02:54,389 INFO L87 Difference]: Start difference. First operand 1051 states and 1690 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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 00:02:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:54,562 INFO L93 Difference]: Finished difference Result 2299 states and 3726 transitions. [2023-11-23 00:02:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 00:02:54,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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 294 [2023-11-23 00:02:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:54,569 INFO L225 Difference]: With dead ends: 2299 [2023-11-23 00:02:54,569 INFO L226 Difference]: Without dead ends: 1796 [2023-11-23 00:02:54,570 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 00:02:54,571 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 4233 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4238 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:54,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4238 Valid, 4019 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-11-23 00:02:54,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1306. [2023-11-23 00:02:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1284 states have (on average 1.6082554517133956) internal successors, (2065), 1284 states have internal predecessors, (2065), 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 00:02:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2105 transitions. [2023-11-23 00:02:54,608 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2105 transitions. Word has length 294 [2023-11-23 00:02:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:54,608 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 2105 transitions. [2023-11-23 00:02:54,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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 00:02:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2105 transitions. [2023-11-23 00:02:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2023-11-23 00:02:54,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:54,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:02:54,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 00:02:54,615 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:54,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash -708229824, now seen corresponding path program 1 times [2023-11-23 00:02:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288068224] [2023-11-23 00:02:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:54,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2023-11-23 00:02:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-11-23 00:02:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2023-11-23 00:02:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2023-11-23 00:02:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-23 00:02:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:02:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:55,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288068224] [2023-11-23 00:02:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288068224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:02:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:02:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 00:02:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966680046] [2023-11-23 00:02:55,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:55,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:02:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:02:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 00:02:55,264 INFO L87 Difference]: Start difference. First operand 1306 states and 2105 transitions. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 00:02:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:55,299 INFO L93 Difference]: Finished difference Result 1810 states and 2925 transitions. [2023-11-23 00:02:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:02:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 650 [2023-11-23 00:02:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:55,303 INFO L225 Difference]: With dead ends: 1810 [2023-11-23 00:02:55,303 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:02:55,304 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 00:02:55,305 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 0 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:55,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1829 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:02:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:02:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:02:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6077821011673152) internal successors, (2066), 1285 states have internal predecessors, (2066), 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 00:02:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2106 transitions. [2023-11-23 00:02:55,337 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2106 transitions. Word has length 650 [2023-11-23 00:02:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:55,337 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2106 transitions. [2023-11-23 00:02:55,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 00:02:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2106 transitions. [2023-11-23 00:02:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-11-23 00:02:55,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:55,342 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:02:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 00:02:55,342 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:55,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 556350383, now seen corresponding path program 1 times [2023-11-23 00:02:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819276626] [2023-11-23 00:02:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2023-11-23 00:02:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2023-11-23 00:02:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2023-11-23 00:02:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2023-11-23 00:02:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-23 00:02:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:02:56,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:56,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819276626] [2023-11-23 00:02:56,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819276626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:56,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005370598] [2023-11-23 00:02:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:56,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:56,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:56,052 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 00:02:56,078 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 00:02:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:56,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 3344 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 00:02:56,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:02:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-23 00:02:57,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:02:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-23 00:02:57,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005370598] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:57,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:02:57,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-23 00:02:57,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676409439] [2023-11-23 00:02:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:02:57,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:02:57,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:02:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:02:57,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-23 00:02:57,930 INFO L87 Difference]: Start difference. First operand 1307 states and 2106 transitions. Second operand has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 00:02:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:02:58,105 INFO L93 Difference]: Finished difference Result 1811 states and 2925 transitions. [2023-11-23 00:02:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:02:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 651 [2023-11-23 00:02:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:02:58,111 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:02:58,111 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:02:58,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1307 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:02:58,112 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1494 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:02:58,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1678 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:02:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:02:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:02:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6070038910505837) internal successors, (2065), 1285 states have internal predecessors, (2065), 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 00:02:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2105 transitions. [2023-11-23 00:02:58,143 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2105 transitions. Word has length 651 [2023-11-23 00:02:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:02:58,143 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2105 transitions. [2023-11-23 00:02:58,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 00:02:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2105 transitions. [2023-11-23 00:02:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-23 00:02:58,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:02:58,148 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:02:58,166 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 00:02:58,369 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,SelfDestructingSolverStorable17 [2023-11-23 00:02:58,369 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:02:58,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:02:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1327946507, now seen corresponding path program 1 times [2023-11-23 00:02:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:02:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521609351] [2023-11-23 00:02:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:02:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:02:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:02:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:02:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:02:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:02:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-11-23 00:02:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-11-23 00:02:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2023-11-23 00:02:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-23 00:02:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-23 00:02:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:02:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:02:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521609351] [2023-11-23 00:02:59,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521609351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:02:59,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006474512] [2023-11-23 00:02:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:02:59,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:02:59,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:02:59,020 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 00:02:59,041 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 00:02:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:02:59,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 3348 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 00:02:59,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-23 00:03:00,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-23 00:03:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006474512] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:00,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-23 00:03:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270083044] [2023-11-23 00:03:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:03:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:03:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-23 00:03:00,999 INFO L87 Difference]: Start difference. First operand 1307 states and 2105 transitions. Second operand has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 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 00:03:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:01,156 INFO L93 Difference]: Finished difference Result 1811 states and 2923 transitions. [2023-11-23 00:03:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:03:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 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 652 [2023-11-23 00:03:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:01,160 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:03:01,160 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:03:01,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1309 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:03:01,162 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 737 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:01,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1686 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:03:01,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:03:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:03:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6062256809338522) internal successors, (2064), 1285 states have internal predecessors, (2064), 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 00:03:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2104 transitions. [2023-11-23 00:03:01,203 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2104 transitions. Word has length 652 [2023-11-23 00:03:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:01,204 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2104 transitions. [2023-11-23 00:03:01,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 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 00:03:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2104 transitions. [2023-11-23 00:03:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-11-23 00:03:01,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:01,208 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:01,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 00:03:01,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:01,444 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:01,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:01,445 INFO L85 PathProgramCache]: Analyzing trace with hash 912980915, now seen corresponding path program 1 times [2023-11-23 00:03:01,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:01,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562027252] [2023-11-23 00:03:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2023-11-23 00:03:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2023-11-23 00:03:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-23 00:03:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2023-11-23 00:03:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-11-23 00:03:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:03:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562027252] [2023-11-23 00:03:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562027252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884119924] [2023-11-23 00:03:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:02,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:02,118 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 00:03:02,124 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 00:03:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:02,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 3351 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 00:03:02,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-23 00:03:03,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-23 00:03:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884119924] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:03,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-23 00:03:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580713574] [2023-11-23 00:03:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:03:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:03:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-23 00:03:03,893 INFO L87 Difference]: Start difference. First operand 1307 states and 2104 transitions. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 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 00:03:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:04,036 INFO L93 Difference]: Finished difference Result 1811 states and 2921 transitions. [2023-11-23 00:03:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:03:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 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 653 [2023-11-23 00:03:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:04,041 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:03:04,041 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:03:04,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 1311 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:03:04,042 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 731 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:04,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1686 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:03:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:03:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:03:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6054474708171207) internal successors, (2063), 1285 states have internal predecessors, (2063), 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 00:03:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2103 transitions. [2023-11-23 00:03:04,072 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2103 transitions. Word has length 653 [2023-11-23 00:03:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:04,073 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2103 transitions. [2023-11-23 00:03:04,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 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 00:03:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2103 transitions. [2023-11-23 00:03:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-23 00:03:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:04,078 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:04,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-23 00:03:04,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:04,294 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:04,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash 196161087, now seen corresponding path program 1 times [2023-11-23 00:03:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920390973] [2023-11-23 00:03:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2023-11-23 00:03:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-11-23 00:03:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-23 00:03:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2023-11-23 00:03:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2023-11-23 00:03:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:03:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:04,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920390973] [2023-11-23 00:03:04,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920390973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:04,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642787227] [2023-11-23 00:03:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:04,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:04,965 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 00:03:04,992 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 00:03:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:05,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 3354 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 00:03:05,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-23 00:03:06,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-23 00:03:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642787227] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-23 00:03:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34870145] [2023-11-23 00:03:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:03:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:03:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-23 00:03:06,804 INFO L87 Difference]: Start difference. First operand 1307 states and 2103 transitions. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 00:03:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:06,939 INFO L93 Difference]: Finished difference Result 1811 states and 2919 transitions. [2023-11-23 00:03:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:03:06,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 654 [2023-11-23 00:03:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:06,951 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:03:06,951 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:03:06,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1331 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:03:06,952 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1434 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:06,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1678 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:03:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:03:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:03:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6046692607003892) internal successors, (2062), 1285 states have internal predecessors, (2062), 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 00:03:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2102 transitions. [2023-11-23 00:03:06,985 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2102 transitions. Word has length 654 [2023-11-23 00:03:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:06,985 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2102 transitions. [2023-11-23 00:03:06,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 00:03:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2102 transitions. [2023-11-23 00:03:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-11-23 00:03:06,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:06,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:07,047 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 00:03:07,206 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,SelfDestructingSolverStorable20 [2023-11-23 00:03:07,206 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:07,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash -492648013, now seen corresponding path program 1 times [2023-11-23 00:03:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:07,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353994724] [2023-11-23 00:03:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2023-11-23 00:03:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-11-23 00:03:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-11-23 00:03:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-11-23 00:03:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-23 00:03:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:03:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353994724] [2023-11-23 00:03:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353994724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189982242] [2023-11-23 00:03:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:07,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:07,799 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 00:03:07,826 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 00:03:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:08,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 00:03:08,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-23 00:03:08,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:03:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189982242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:03:08,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:03:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 00:03:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042270819] [2023-11-23 00:03:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:08,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:03:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:03:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:03:08,965 INFO L87 Difference]: Start difference. First operand 1307 states and 2102 transitions. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 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 00:03:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:09,316 INFO L93 Difference]: Finished difference Result 1811 states and 2917 transitions. [2023-11-23 00:03:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:03:09,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 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 655 [2023-11-23 00:03:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:09,320 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:03:09,320 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:03:09,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 674 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 00:03:09,321 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 654 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:09,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1340 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 00:03:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:03:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:03:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6031128404669261) internal successors, (2060), 1285 states have internal predecessors, (2060), 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 00:03:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2100 transitions. [2023-11-23 00:03:09,358 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2100 transitions. Word has length 655 [2023-11-23 00:03:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:09,358 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2100 transitions. [2023-11-23 00:03:09,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 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 00:03:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2100 transitions. [2023-11-23 00:03:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-23 00:03:09,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:09,364 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:09,382 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 00:03:09,579 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,SelfDestructingSolverStorable21 [2023-11-23 00:03:09,580 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:09,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2128899597, now seen corresponding path program 1 times [2023-11-23 00:03:09,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:09,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036700956] [2023-11-23 00:03:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:09,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2023-11-23 00:03:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2023-11-23 00:03:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-23 00:03:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2023-11-23 00:03:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2023-11-23 00:03:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:03:10,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:10,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036700956] [2023-11-23 00:03:10,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036700956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:10,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298998058] [2023-11-23 00:03:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:10,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:10,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:10,229 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 00:03:10,265 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 00:03:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:10,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 00:03:10,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-23 00:03:11,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:03:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298998058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:03:11,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:03:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 00:03:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432581331] [2023-11-23 00:03:11,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:03:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:03:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:03:11,521 INFO L87 Difference]: Start difference. First operand 1307 states and 2100 transitions. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 00:03:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:11,855 INFO L93 Difference]: Finished difference Result 1811 states and 2913 transitions. [2023-11-23 00:03:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:03:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 656 [2023-11-23 00:03:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:11,858 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:03:11,858 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:03:11,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 675 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 00:03:11,859 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 647 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:11,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1340 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 00:03:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:03:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:03:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6015564202334631) internal successors, (2058), 1285 states have internal predecessors, (2058), 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 00:03:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2098 transitions. [2023-11-23 00:03:11,887 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2098 transitions. Word has length 656 [2023-11-23 00:03:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:11,888 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2098 transitions. [2023-11-23 00:03:11,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 00:03:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2098 transitions. [2023-11-23 00:03:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-23 00:03:11,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:11,892 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:11,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 00:03:12,107 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,SelfDestructingSolverStorable22 [2023-11-23 00:03:12,108 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:12,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1581737241, now seen corresponding path program 1 times [2023-11-23 00:03:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038731288] [2023-11-23 00:03:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2023-11-23 00:03:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2023-11-23 00:03:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-23 00:03:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2023-11-23 00:03:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-23 00:03:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:03:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038731288] [2023-11-23 00:03:12,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038731288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868063623] [2023-11-23 00:03:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:12,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:12,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:12,694 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 00:03:12,709 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 00:03:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:13,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 00:03:13,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-23 00:03:13,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:03:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868063623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:03:13,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:03:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 00:03:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785385162] [2023-11-23 00:03:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:13,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:03:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:03:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:03:13,987 INFO L87 Difference]: Start difference. First operand 1307 states and 2098 transitions. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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 00:03:14,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:14,305 INFO L93 Difference]: Finished difference Result 1811 states and 2909 transitions. [2023-11-23 00:03:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:03:14,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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 657 [2023-11-23 00:03:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:14,308 INFO L225 Difference]: With dead ends: 1811 [2023-11-23 00:03:14,308 INFO L226 Difference]: Without dead ends: 1307 [2023-11-23 00:03:14,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 676 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 00:03:14,313 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 634 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:14,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1340 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 00:03:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-23 00:03:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-23 00:03:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1285 states have (on average 1.6) internal successors, (2056), 1285 states have internal predecessors, (2056), 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 00:03:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2096 transitions. [2023-11-23 00:03:14,342 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2096 transitions. Word has length 657 [2023-11-23 00:03:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:14,343 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 2096 transitions. [2023-11-23 00:03:14,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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 00:03:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2096 transitions. [2023-11-23 00:03:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-23 00:03:14,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:14,347 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:14,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 00:03:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:14,563 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:14,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1196376602, now seen corresponding path program 1 times [2023-11-23 00:03:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884426141] [2023-11-23 00:03:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2023-11-23 00:03:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-11-23 00:03:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-23 00:03:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2023-11-23 00:03:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2023-11-23 00:03:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 00:03:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884426141] [2023-11-23 00:03:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884426141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673147648] [2023-11-23 00:03:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:15,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:15,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:15,202 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 00:03:15,229 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 00:03:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:15,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 3367 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 00:03:15,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 277 proven. 8 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-23 00:03:15,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-23 00:03:15,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673147648] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:15,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:15,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 00:03:15,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867471478] [2023-11-23 00:03:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:15,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:03:15,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:03:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:03:15,947 INFO L87 Difference]: Start difference. First operand 1307 states and 2096 transitions. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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 00:03:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:15,981 INFO L93 Difference]: Finished difference Result 1812 states and 2907 transitions. [2023-11-23 00:03:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:03:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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 658 [2023-11-23 00:03:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:15,984 INFO L225 Difference]: With dead ends: 1812 [2023-11-23 00:03:15,984 INFO L226 Difference]: Without dead ends: 1308 [2023-11-23 00:03:15,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1338 GetRequests, 1333 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 00:03:15,985 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:15,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1809 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:03:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2023-11-23 00:03:16,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2023-11-23 00:03:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1286 states have (on average 1.5995334370139969) internal successors, (2057), 1286 states have internal predecessors, (2057), 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 00:03:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2097 transitions. [2023-11-23 00:03:16,013 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2097 transitions. Word has length 658 [2023-11-23 00:03:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:16,013 INFO L495 AbstractCegarLoop]: Abstraction has 1308 states and 2097 transitions. [2023-11-23 00:03:16,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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 00:03:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2097 transitions. [2023-11-23 00:03:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-23 00:03:16,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:16,017 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:16,035 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 00:03:16,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:16,231 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:16,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:16,232 INFO L85 PathProgramCache]: Analyzing trace with hash -202546460, now seen corresponding path program 1 times [2023-11-23 00:03:16,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:16,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668650997] [2023-11-23 00:03:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:16,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2023-11-23 00:03:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2023-11-23 00:03:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-23 00:03:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2023-11-23 00:03:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-23 00:03:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-23 00:03:16,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:16,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668650997] [2023-11-23 00:03:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668650997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:16,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054870655] [2023-11-23 00:03:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:16,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:16,810 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 00:03:16,812 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 00:03:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:17,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 3374 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 00:03:17,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 277 proven. 8 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-11-23 00:03:17,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-11-23 00:03:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054870655] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:17,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 00:03:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933682481] [2023-11-23 00:03:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:17,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:03:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:03:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:03:17,585 INFO L87 Difference]: Start difference. First operand 1308 states and 2097 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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 00:03:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:17,619 INFO L93 Difference]: Finished difference Result 1814 states and 2909 transitions. [2023-11-23 00:03:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:03:17,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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 659 [2023-11-23 00:03:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:17,622 INFO L225 Difference]: With dead ends: 1814 [2023-11-23 00:03:17,622 INFO L226 Difference]: Without dead ends: 1309 [2023-11-23 00:03:17,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1335 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 00:03:17,623 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:17,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1809 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:03:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-11-23 00:03:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2023-11-23 00:03:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1287 states have (on average 1.599067599067599) internal successors, (2058), 1287 states have internal predecessors, (2058), 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 00:03:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2098 transitions. [2023-11-23 00:03:17,668 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2098 transitions. Word has length 659 [2023-11-23 00:03:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:17,669 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 2098 transitions. [2023-11-23 00:03:17,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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 00:03:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2098 transitions. [2023-11-23 00:03:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-23 00:03:17,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:17,673 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:17,701 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 00:03:17,889 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,SelfDestructingSolverStorable25 [2023-11-23 00:03:17,889 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:17,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash 146483849, now seen corresponding path program 1 times [2023-11-23 00:03:17,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:17,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678951049] [2023-11-23 00:03:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:17,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-11-23 00:03:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2023-11-23 00:03:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:03:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-23 00:03:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-23 00:03:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-11-23 00:03:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678951049] [2023-11-23 00:03:18,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678951049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787338448] [2023-11-23 00:03:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:18,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:18,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:18,462 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 00:03:18,463 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 00:03:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:19,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 3381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 00:03:19,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 277 proven. 8 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 00:03:19,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 00:03:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787338448] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:19,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:19,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-23 00:03:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309124049] [2023-11-23 00:03:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:03:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:03:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:03:19,229 INFO L87 Difference]: Start difference. First operand 1309 states and 2098 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 00:03:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:19,263 INFO L93 Difference]: Finished difference Result 1816 states and 2911 transitions. [2023-11-23 00:03:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:03:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 660 [2023-11-23 00:03:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:19,266 INFO L225 Difference]: With dead ends: 1816 [2023-11-23 00:03:19,266 INFO L226 Difference]: Without dead ends: 1310 [2023-11-23 00:03:19,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1337 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 00:03:19,267 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:19,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1810 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:03:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2023-11-23 00:03:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2023-11-23 00:03:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1288 states have (on average 1.5986024844720497) internal successors, (2059), 1288 states have internal predecessors, (2059), 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 00:03:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2099 transitions. [2023-11-23 00:03:19,296 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2099 transitions. Word has length 660 [2023-11-23 00:03:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:19,296 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2099 transitions. [2023-11-23 00:03:19,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 00:03:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2099 transitions. [2023-11-23 00:03:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-23 00:03:19,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:19,302 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:19,320 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 00:03:19,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-23 00:03:19,515 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:19,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash -315936651, now seen corresponding path program 1 times [2023-11-23 00:03:19,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:19,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753429634] [2023-11-23 00:03:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2023-11-23 00:03:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2023-11-23 00:03:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2023-11-23 00:03:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-23 00:03:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-23 00:03:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 00:03:20,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753429634] [2023-11-23 00:03:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753429634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162248272] [2023-11-23 00:03:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:20,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:20,091 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 00:03:20,110 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 00:03:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:20,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 00:03:20,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 277 proven. 30 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 00:03:20,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 00:03:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162248272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:03:20,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:03:20,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 00:03:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268180938] [2023-11-23 00:03:20,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:03:20,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 00:03:20,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 00:03:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 00:03:20,795 INFO L87 Difference]: Start difference. First operand 1310 states and 2099 transitions. Second operand has 9 states, 9 states have (on average 65.0) internal successors, (585), 9 states have internal predecessors, (585), 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 00:03:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:20,867 INFO L93 Difference]: Finished difference Result 1820 states and 2917 transitions. [2023-11-23 00:03:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 00:03:20,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 65.0) internal successors, (585), 9 states have internal predecessors, (585), 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 661 [2023-11-23 00:03:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:20,869 INFO L225 Difference]: With dead ends: 1820 [2023-11-23 00:03:20,869 INFO L226 Difference]: Without dead ends: 1313 [2023-11-23 00:03:20,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1337 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 00:03:20,871 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 8 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:20,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5433 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:03:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-11-23 00:03:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1313. [2023-11-23 00:03:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1291 states have (on average 1.5972114639814097) internal successors, (2062), 1291 states have internal predecessors, (2062), 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 00:03:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2102 transitions. [2023-11-23 00:03:20,898 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2102 transitions. Word has length 661 [2023-11-23 00:03:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:20,898 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 2102 transitions. [2023-11-23 00:03:20,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.0) internal successors, (585), 9 states have internal predecessors, (585), 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 00:03:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2102 transitions. [2023-11-23 00:03:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-11-23 00:03:20,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:20,903 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:20,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-23 00:03:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 00:03:21,118 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:21,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash 691350662, now seen corresponding path program 2 times [2023-11-23 00:03:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487564799] [2023-11-23 00:03:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-11-23 00:03:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-11-23 00:03:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2023-11-23 00:03:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2023-11-23 00:03:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2023-11-23 00:03:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 177 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 00:03:21,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:21,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487564799] [2023-11-23 00:03:21,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487564799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:21,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723661609] [2023-11-23 00:03:21,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:03:21,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:21,890 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 00:03:21,925 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 00:03:22,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:03:22,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:03:22,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 00:03:22,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-11-23 00:03:23,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:03:23,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723661609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:03:23,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:03:23,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2023-11-23 00:03:23,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704675764] [2023-11-23 00:03:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:23,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 00:03:23,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 00:03:23,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-23 00:03:23,153 INFO L87 Difference]: Start difference. First operand 1313 states and 2102 transitions. Second operand has 12 states, 12 states have (on average 40.75) internal successors, (489), 12 states have internal predecessors, (489), 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 00:03:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:24,864 INFO L93 Difference]: Finished difference Result 4214 states and 6784 transitions. [2023-11-23 00:03:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 00:03:24,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 40.75) internal successors, (489), 12 states have internal predecessors, (489), 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 664 [2023-11-23 00:03:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:24,869 INFO L225 Difference]: With dead ends: 4214 [2023-11-23 00:03:24,870 INFO L226 Difference]: Without dead ends: 3599 [2023-11-23 00:03:24,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-23 00:03:24,872 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 6719 mSDsluCounter, 7261 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6724 SdHoareTripleChecker+Valid, 8317 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:24,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6724 Valid, 8317 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2972 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 00:03:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2023-11-23 00:03:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 1559. [2023-11-23 00:03:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1537 states have (on average 1.5992192582953806) internal successors, (2458), 1537 states have internal predecessors, (2458), 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 00:03:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2498 transitions. [2023-11-23 00:03:24,914 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2498 transitions. Word has length 664 [2023-11-23 00:03:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:24,914 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2498 transitions. [2023-11-23 00:03:24,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.75) internal successors, (489), 12 states have internal predecessors, (489), 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 00:03:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2498 transitions. [2023-11-23 00:03:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-11-23 00:03:24,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:24,919 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:24,933 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 00:03:25,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-23 00:03:25,128 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:25,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash -943917714, now seen corresponding path program 1 times [2023-11-23 00:03:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108524264] [2023-11-23 00:03:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:25,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2023-11-23 00:03:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2023-11-23 00:03:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-11-23 00:03:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-23 00:03:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-23 00:03:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 178 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 00:03:25,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108524264] [2023-11-23 00:03:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108524264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091754369] [2023-11-23 00:03:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:25,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:25,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:25,935 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 00:03:25,936 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 00:03:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:26,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 3415 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 00:03:26,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 278 proven. 84 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-23 00:03:26,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 178 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-23 00:03:26,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091754369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:03:26,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:03:26,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-23 00:03:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761531466] [2023-11-23 00:03:26,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:03:26,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 00:03:26,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:26,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 00:03:26,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-23 00:03:26,847 INFO L87 Difference]: Start difference. First operand 1559 states and 2498 transitions. Second operand has 18 states, 18 states have (on average 33.44444444444444) internal successors, (602), 18 states have internal predecessors, (602), 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 00:03:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:27,044 INFO L93 Difference]: Finished difference Result 2196 states and 3519 transitions. [2023-11-23 00:03:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 00:03:27,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.44444444444444) internal successors, (602), 18 states have internal predecessors, (602), 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 666 [2023-11-23 00:03:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:27,047 INFO L225 Difference]: With dead ends: 2196 [2023-11-23 00:03:27,047 INFO L226 Difference]: Without dead ends: 1563 [2023-11-23 00:03:27,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:03:27,049 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 17 mSDsluCounter, 12837 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13758 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:27,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13758 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:03:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2023-11-23 00:03:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2023-11-23 00:03:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1541 states have (on average 1.5976638546398443) internal successors, (2462), 1541 states have internal predecessors, (2462), 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 00:03:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2502 transitions. [2023-11-23 00:03:27,082 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2502 transitions. Word has length 666 [2023-11-23 00:03:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:27,083 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2502 transitions. [2023-11-23 00:03:27,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.44444444444444) internal successors, (602), 18 states have internal predecessors, (602), 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 00:03:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2502 transitions. [2023-11-23 00:03:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2023-11-23 00:03:27,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:27,088 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:27,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 00:03:27,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:27,297 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:27,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash 724612782, now seen corresponding path program 2 times [2023-11-23 00:03:27,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:27,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570998828] [2023-11-23 00:03:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:27,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2023-11-23 00:03:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2023-11-23 00:03:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-11-23 00:03:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-23 00:03:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2023-11-23 00:03:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-23 00:03:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570998828] [2023-11-23 00:03:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570998828] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407432899] [2023-11-23 00:03:27,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:03:27,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:27,869 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 00:03:27,889 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 00:03:28,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:03:28,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:03:28,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 00:03:28,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 103 proven. 72 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-11-23 00:03:29,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 99 proven. 76 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-11-23 00:03:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407432899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:03:31,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:03:31,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 10] total 18 [2023-11-23 00:03:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954481626] [2023-11-23 00:03:31,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:03:31,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 00:03:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 00:03:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-23 00:03:31,654 INFO L87 Difference]: Start difference. First operand 1563 states and 2502 transitions. Second operand has 18 states, 18 states have (on average 89.11111111111111) internal successors, (1604), 18 states have internal predecessors, (1604), 6 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-23 00:03:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:43,428 INFO L93 Difference]: Finished difference Result 16468 states and 26461 transitions. [2023-11-23 00:03:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-23 00:03:43,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 89.11111111111111) internal successors, (1604), 18 states have internal predecessors, (1604), 6 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 670 [2023-11-23 00:03:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:43,450 INFO L225 Difference]: With dead ends: 16468 [2023-11-23 00:03:43,451 INFO L226 Difference]: Without dead ends: 15545 [2023-11-23 00:03:43,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1375 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2115 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1401, Invalid=5739, Unknown=0, NotChecked=0, Total=7140 [2023-11-23 00:03:43,458 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 9930 mSDsluCounter, 32533 mSDsCounter, 0 mSdLazyCounter, 13626 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9935 SdHoareTripleChecker+Valid, 35881 SdHoareTripleChecker+Invalid, 13705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 13626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:43,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9935 Valid, 35881 Invalid, 13705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 13626 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-23 00:03:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15545 states. [2023-11-23 00:03:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15545 to 2372. [2023-11-23 00:03:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2310 states have (on average 1.5978354978354978) internal successors, (3691), 2310 states have internal predecessors, (3691), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:03:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3811 transitions. [2023-11-23 00:03:43,587 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3811 transitions. Word has length 670 [2023-11-23 00:03:43,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:43,588 INFO L495 AbstractCegarLoop]: Abstraction has 2372 states and 3811 transitions. [2023-11-23 00:03:43,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 89.11111111111111) internal successors, (1604), 18 states have internal predecessors, (1604), 6 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-23 00:03:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3811 transitions. [2023-11-23 00:03:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-23 00:03:43,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:43,593 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:43,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-23 00:03:43,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:43,806 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:43,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash 888533742, now seen corresponding path program 1 times [2023-11-23 00:03:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869095555] [2023-11-23 00:03:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-11-23 00:03:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-11-23 00:03:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-11-23 00:03:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-23 00:03:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2023-11-23 00:03:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-23 00:03:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869095555] [2023-11-23 00:03:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869095555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696779007] [2023-11-23 00:03:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:44,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:44,540 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 00:03:44,578 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 00:03:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:45,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 00:03:45,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 278 proven. 50 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 00:03:45,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-23 00:03:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696779007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:03:45,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:03:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-23 00:03:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934582802] [2023-11-23 00:03:45,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:03:45,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 00:03:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 00:03:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-23 00:03:45,347 INFO L87 Difference]: Start difference. First operand 2372 states and 3811 transitions. Second operand has 12 states, 12 states have (on average 49.333333333333336) internal successors, (592), 12 states have internal predecessors, (592), 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 00:03:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:45,497 INFO L93 Difference]: Finished difference Result 3216 states and 5164 transitions. [2023-11-23 00:03:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 00:03:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.333333333333336) internal successors, (592), 12 states have internal predecessors, (592), 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 671 [2023-11-23 00:03:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:45,501 INFO L225 Difference]: With dead ends: 3216 [2023-11-23 00:03:45,501 INFO L226 Difference]: Without dead ends: 2376 [2023-11-23 00:03:45,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1367 GetRequests, 1355 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-23 00:03:45,502 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 11 mSDsluCounter, 6361 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7274 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:45,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7274 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:03:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2023-11-23 00:03:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2376. [2023-11-23 00:03:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2314 states have (on average 1.5968020743301643) internal successors, (3695), 2314 states have internal predecessors, (3695), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:03:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3815 transitions. [2023-11-23 00:03:45,580 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3815 transitions. Word has length 671 [2023-11-23 00:03:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:45,581 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 3815 transitions. [2023-11-23 00:03:45,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.333333333333336) internal successors, (592), 12 states have internal predecessors, (592), 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 00:03:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3815 transitions. [2023-11-23 00:03:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-11-23 00:03:45,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:45,586 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:45,617 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 00:03:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:45,801 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:45,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:45,801 INFO L85 PathProgramCache]: Analyzing trace with hash -306941970, now seen corresponding path program 2 times [2023-11-23 00:03:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:45,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376521894] [2023-11-23 00:03:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2023-11-23 00:03:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-11-23 00:03:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2023-11-23 00:03:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2023-11-23 00:03:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2023-11-23 00:03:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 178 proven. 21 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-23 00:03:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:46,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376521894] [2023-11-23 00:03:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376521894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212428326] [2023-11-23 00:03:46,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:03:46,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:46,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:46,682 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 00:03:46,683 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 00:03:47,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:03:47,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:03:47,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 00:03:47,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2023-11-23 00:03:48,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-11-23 00:03:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212428326] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:48,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 00:03:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 10] total 23 [2023-11-23 00:03:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218164657] [2023-11-23 00:03:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:48,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:03:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:03:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-11-23 00:03:48,960 INFO L87 Difference]: Start difference. First operand 2376 states and 3815 transitions. Second operand has 8 states, 8 states have (on average 60.625) internal successors, (485), 8 states have internal predecessors, (485), 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 00:03:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:49,664 INFO L93 Difference]: Finished difference Result 6937 states and 11122 transitions. [2023-11-23 00:03:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 00:03:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 60.625) internal successors, (485), 8 states have internal predecessors, (485), 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 675 [2023-11-23 00:03:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:49,698 INFO L225 Difference]: With dead ends: 6937 [2023-11-23 00:03:49,698 INFO L226 Difference]: Without dead ends: 6093 [2023-11-23 00:03:49,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1392 GetRequests, 1361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 00:03:49,700 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 5091 mSDsluCounter, 10916 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 13120 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:49,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5101 Valid, 13120 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 00:03:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6093 states. [2023-11-23 00:03:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6093 to 2490. [2023-11-23 00:03:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2428 states have (on average 1.598846787479407) internal successors, (3882), 2428 states have internal predecessors, (3882), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:03:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4002 transitions. [2023-11-23 00:03:49,820 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4002 transitions. Word has length 675 [2023-11-23 00:03:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:49,823 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 4002 transitions. [2023-11-23 00:03:49,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.625) internal successors, (485), 8 states have internal predecessors, (485), 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 00:03:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4002 transitions. [2023-11-23 00:03:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-11-23 00:03:49,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:49,830 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:49,850 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 00:03:50,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:50,036 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:50,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1468065392, now seen corresponding path program 1 times [2023-11-23 00:03:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117657335] [2023-11-23 00:03:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2023-11-23 00:03:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-11-23 00:03:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2023-11-23 00:03:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2023-11-23 00:03:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2023-11-23 00:03:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 178 proven. 21 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-23 00:03:50,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117657335] [2023-11-23 00:03:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117657335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138263583] [2023-11-23 00:03:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:50,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:50,857 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 00:03:50,858 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 00:03:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:51,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 3479 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 00:03:51,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 278 proven. 110 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-23 00:03:51,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 178 proven. 21 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-23 00:03:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138263583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:03:51,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:03:51,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 9] total 24 [2023-11-23 00:03:51,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612879137] [2023-11-23 00:03:51,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:03:51,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 00:03:51,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 00:03:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-11-23 00:03:51,832 INFO L87 Difference]: Start difference. First operand 2490 states and 4002 transitions. Second operand has 24 states, 24 states have (on average 25.5) internal successors, (612), 24 states have internal predecessors, (612), 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 00:03:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:52,131 INFO L93 Difference]: Finished difference Result 3450 states and 5542 transitions. [2023-11-23 00:03:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 00:03:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 25.5) internal successors, (612), 24 states have internal predecessors, (612), 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 675 [2023-11-23 00:03:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:52,135 INFO L225 Difference]: With dead ends: 3450 [2023-11-23 00:03:52,135 INFO L226 Difference]: Without dead ends: 2492 [2023-11-23 00:03:52,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1355 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-11-23 00:03:52,137 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 23 mSDsluCounter, 17573 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 18502 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:52,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 18502 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 00:03:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2023-11-23 00:03:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2023-11-23 00:03:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2430 states have (on average 1.5983539094650205) internal successors, (3884), 2430 states have internal predecessors, (3884), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:03:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4004 transitions. [2023-11-23 00:03:52,279 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4004 transitions. Word has length 675 [2023-11-23 00:03:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:52,279 INFO L495 AbstractCegarLoop]: Abstraction has 2492 states and 4004 transitions. [2023-11-23 00:03:52,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 25.5) internal successors, (612), 24 states have internal predecessors, (612), 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 00:03:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4004 transitions. [2023-11-23 00:03:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-23 00:03:52,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:52,285 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:52,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-23 00:03:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:52,500 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 244954352, now seen corresponding path program 2 times [2023-11-23 00:03:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495724947] [2023-11-23 00:03:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-11-23 00:03:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2023-11-23 00:03:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-23 00:03:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:03:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-23 00:03:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 00:03:53,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:53,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495724947] [2023-11-23 00:03:53,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495724947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:53,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334754381] [2023-11-23 00:03:53,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:03:53,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:53,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:53,099 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 00:03:53,122 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 00:03:53,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:03:53,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:03:53,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 00:03:53,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-11-23 00:03:53,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:03:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334754381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:03:53,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:03:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-23 00:03:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697651326] [2023-11-23 00:03:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:03:53,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 00:03:53,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 00:03:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 00:03:53,723 INFO L87 Difference]: Start difference. First operand 2492 states and 4004 transitions. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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 00:03:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:54,028 INFO L93 Difference]: Finished difference Result 5463 states and 8774 transitions. [2023-11-23 00:03:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 00:03:54,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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 677 [2023-11-23 00:03:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:54,033 INFO L225 Difference]: With dead ends: 5463 [2023-11-23 00:03:54,033 INFO L226 Difference]: Without dead ends: 4503 [2023-11-23 00:03:54,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 698 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 00:03:54,035 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 3564 mSDsluCounter, 6679 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 8286 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:54,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 8286 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:03:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2023-11-23 00:03:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 2489. [2023-11-23 00:03:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2427 states have (on average 1.5986814997939844) internal successors, (3880), 2427 states have internal predecessors, (3880), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:03:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 4000 transitions. [2023-11-23 00:03:54,130 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 4000 transitions. Word has length 677 [2023-11-23 00:03:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:54,131 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 4000 transitions. [2023-11-23 00:03:54,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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 00:03:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 4000 transitions. [2023-11-23 00:03:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-23 00:03:54,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:54,137 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:54,146 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 00:03:54,343 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,SelfDestructingSolverStorable34 [2023-11-23 00:03:54,344 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:54,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1923080020, now seen corresponding path program 1 times [2023-11-23 00:03:54,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:54,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327587695] [2023-11-23 00:03:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:54,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-11-23 00:03:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2023-11-23 00:03:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-23 00:03:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:03:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-23 00:03:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 00:03:54,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327587695] [2023-11-23 00:03:54,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327587695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774665955] [2023-11-23 00:03:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:54,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:54,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:54,984 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 00:03:55,006 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 00:03:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:55,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 3493 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 00:03:55,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:03:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 278 proven. 30 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-23 00:03:55,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:03:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 00:03:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774665955] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:03:55,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:03:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 00:03:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291777545] [2023-11-23 00:03:55,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:03:55,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 00:03:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:03:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 00:03:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 00:03:55,815 INFO L87 Difference]: Start difference. First operand 2489 states and 4000 transitions. Second operand has 9 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 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 00:03:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:03:55,947 INFO L93 Difference]: Finished difference Result 3451 states and 5542 transitions. [2023-11-23 00:03:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 00:03:55,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 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 677 [2023-11-23 00:03:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:03:55,950 INFO L225 Difference]: With dead ends: 3451 [2023-11-23 00:03:55,950 INFO L226 Difference]: Without dead ends: 2492 [2023-11-23 00:03:55,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1369 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 00:03:55,952 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 8 mSDsluCounter, 5430 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6339 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:03:55,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6339 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:03:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2023-11-23 00:03:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2023-11-23 00:03:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2430 states have (on average 1.5979423868312757) internal successors, (3883), 2430 states have internal predecessors, (3883), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:03:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4003 transitions. [2023-11-23 00:03:56,042 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4003 transitions. Word has length 677 [2023-11-23 00:03:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:03:56,043 INFO L495 AbstractCegarLoop]: Abstraction has 2492 states and 4003 transitions. [2023-11-23 00:03:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 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 00:03:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4003 transitions. [2023-11-23 00:03:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-23 00:03:56,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:03:56,048 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:03:56,067 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 00:03:56,267 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,SelfDestructingSolverStorable35 [2023-11-23 00:03:56,267 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:03:56,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:03:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1388503025, now seen corresponding path program 2 times [2023-11-23 00:03:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:03:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440612988] [2023-11-23 00:03:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:03:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:03:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:03:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:03:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:03:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:03:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:03:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2023-11-23 00:03:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-23 00:03:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-11-23 00:03:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2023-11-23 00:03:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2023-11-23 00:03:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:03:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 178 proven. 10 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 00:03:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:03:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440612988] [2023-11-23 00:03:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440612988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:03:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3108610] [2023-11-23 00:03:57,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:03:57,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:03:57,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:03:57,049 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 00:03:57,060 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 00:03:57,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 00:03:57,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:03:57,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-23 00:03:57,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-23 00:04:00,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:04:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-23 00:04:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3108610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:04:04,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:04:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 13] total 32 [2023-11-23 00:04:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865421891] [2023-11-23 00:04:04,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:04:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 00:04:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 00:04:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=862, Unknown=0, NotChecked=0, Total=992 [2023-11-23 00:04:04,433 INFO L87 Difference]: Start difference. First operand 2492 states and 4003 transitions. Second operand has 32 states, 32 states have (on average 49.53125) internal successors, (1585), 32 states have internal predecessors, (1585), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 00:04:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:04:51,211 INFO L93 Difference]: Finished difference Result 30187 states and 48178 transitions. [2023-11-23 00:04:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2023-11-23 00:04:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 49.53125) internal successors, (1585), 32 states have internal predecessors, (1585), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 680 [2023-11-23 00:04:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:04:51,234 INFO L225 Difference]: With dead ends: 30187 [2023-11-23 00:04:51,234 INFO L226 Difference]: Without dead ends: 29225 [2023-11-23 00:04:51,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1812 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61224 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=14988, Invalid=127518, Unknown=0, NotChecked=0, Total=142506 [2023-11-23 00:04:51,249 INFO L413 NwaCegarLoop]: 2697 mSDtfsCounter, 34827 mSDsluCounter, 58427 mSDsCounter, 0 mSdLazyCounter, 26665 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34827 SdHoareTripleChecker+Valid, 61124 SdHoareTripleChecker+Invalid, 26911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 26665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:04:51,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34827 Valid, 61124 Invalid, 26911 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [246 Valid, 26665 Invalid, 0 Unknown, 0 Unchecked, 20.1s Time] [2023-11-23 00:04:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29225 states. [2023-11-23 00:04:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29225 to 2496. [2023-11-23 00:04:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2434 states have (on average 1.5973705834018077) internal successors, (3888), 2434 states have internal predecessors, (3888), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:04:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4008 transitions. [2023-11-23 00:04:51,454 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4008 transitions. Word has length 680 [2023-11-23 00:04:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:04:51,455 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 4008 transitions. [2023-11-23 00:04:51,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.53125) internal successors, (1585), 32 states have internal predecessors, (1585), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 00:04:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4008 transitions. [2023-11-23 00:04:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-11-23 00:04:51,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:04:51,460 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:04:51,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-23 00:04:51,673 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,SelfDestructingSolverStorable36 [2023-11-23 00:04:51,673 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:04:51,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1005185134, now seen corresponding path program 1 times [2023-11-23 00:04:51,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:51,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432700991] [2023-11-23 00:04:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:51,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:04:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:04:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:04:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:04:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:04:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2023-11-23 00:04:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-23 00:04:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2023-11-23 00:04:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2023-11-23 00:04:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2023-11-23 00:04:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 178 proven. 15 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 00:04:52,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432700991] [2023-11-23 00:04:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432700991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:04:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113953858] [2023-11-23 00:04:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:52,426 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 00:04:52,427 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 00:04:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:53,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 3522 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 00:04:53,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 278 proven. 98 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-23 00:04:53,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:04:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 178 proven. 15 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 00:04:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113953858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:04:53,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:04:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 8] total 21 [2023-11-23 00:04:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321970907] [2023-11-23 00:04:53,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:04:53,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 00:04:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 00:04:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-23 00:04:53,445 INFO L87 Difference]: Start difference. First operand 2496 states and 4008 transitions. Second operand has 21 states, 21 states have (on average 28.904761904761905) internal successors, (607), 21 states have internal predecessors, (607), 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 00:04:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:04:53,718 INFO L93 Difference]: Finished difference Result 3465 states and 5558 transitions. [2023-11-23 00:04:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 00:04:53,718 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 28.904761904761905) internal successors, (607), 21 states have internal predecessors, (607), 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 681 [2023-11-23 00:04:53,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:04:53,721 INFO L225 Difference]: With dead ends: 3465 [2023-11-23 00:04:53,721 INFO L226 Difference]: Without dead ends: 2499 [2023-11-23 00:04:53,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1369 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-23 00:04:53,722 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 20 mSDsluCounter, 11046 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11971 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:04:53,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11971 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:04:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2023-11-23 00:04:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2499. [2023-11-23 00:04:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2437 states have (on average 1.5966352072219943) internal successors, (3891), 2437 states have internal predecessors, (3891), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:04:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4011 transitions. [2023-11-23 00:04:53,855 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4011 transitions. Word has length 681 [2023-11-23 00:04:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:04:53,855 INFO L495 AbstractCegarLoop]: Abstraction has 2499 states and 4011 transitions. [2023-11-23 00:04:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 28.904761904761905) internal successors, (607), 21 states have internal predecessors, (607), 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 00:04:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4011 transitions. [2023-11-23 00:04:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-23 00:04:53,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:04:53,860 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:04:53,876 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 00:04:54,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:54,076 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:04:54,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash 128023859, now seen corresponding path program 2 times [2023-11-23 00:04:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:54,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434696258] [2023-11-23 00:04:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:04:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:04:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:04:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:04:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:04:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2023-11-23 00:04:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-23 00:04:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2023-11-23 00:04:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2023-11-23 00:04:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-23 00:04:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-23 00:04:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434696258] [2023-11-23 00:04:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434696258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:04:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86040112] [2023-11-23 00:04:54,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:04:54,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:54,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:54,663 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 00:04:54,687 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 00:04:55,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 00:04:55,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:04:55,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 3543 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 00:04:55,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-23 00:04:55,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:04:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86040112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:04:55,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:04:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-23 00:04:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446138580] [2023-11-23 00:04:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:04:55,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:04:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:04:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 00:04:55,527 INFO L87 Difference]: Start difference. First operand 2499 states and 4011 transitions. Second operand has 6 states, 5 states have (on average 114.4) internal successors, (572), 6 states have internal predecessors, (572), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 00:04:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:04:55,769 INFO L93 Difference]: Finished difference Result 4335 states and 6970 transitions. [2023-11-23 00:04:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:04:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 114.4) internal successors, (572), 6 states have internal predecessors, (572), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 684 [2023-11-23 00:04:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:04:55,772 INFO L225 Difference]: With dead ends: 4335 [2023-11-23 00:04:55,785 INFO L226 Difference]: Without dead ends: 2499 [2023-11-23 00:04:55,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-23 00:04:55,791 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 2 mSDsluCounter, 3583 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4484 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:04:55,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4484 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:04:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2023-11-23 00:04:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2499. [2023-11-23 00:04:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2437 states have (on average 1.5933524825605252) internal successors, (3883), 2437 states have internal predecessors, (3883), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:04:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4003 transitions. [2023-11-23 00:04:55,927 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4003 transitions. Word has length 684 [2023-11-23 00:04:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:04:55,928 INFO L495 AbstractCegarLoop]: Abstraction has 2499 states and 4003 transitions. [2023-11-23 00:04:55,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 114.4) internal successors, (572), 6 states have internal predecessors, (572), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 00:04:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4003 transitions. [2023-11-23 00:04:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-23 00:04:55,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:04:55,933 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:04:55,951 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 00:04:56,149 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,SelfDestructingSolverStorable38 [2023-11-23 00:04:56,149 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:04:56,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1003290167, now seen corresponding path program 1 times [2023-11-23 00:04:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026826962] [2023-11-23 00:04:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:56,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:04:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:04:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:04:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:04:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:04:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2023-11-23 00:04:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-23 00:04:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-23 00:04:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2023-11-23 00:04:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-11-23 00:04:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-23 00:04:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026826962] [2023-11-23 00:04:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026826962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:04:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765086593] [2023-11-23 00:04:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:56,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:56,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:56,754 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 00:04:56,755 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 00:04:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:57,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 00:04:57,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 279 proven. 30 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-23 00:04:57,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:04:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-23 00:04:57,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765086593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:04:57,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:04:57,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-23 00:04:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954336745] [2023-11-23 00:04:57,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:04:57,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 00:04:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 00:04:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 00:04:57,524 INFO L87 Difference]: Start difference. First operand 2499 states and 4003 transitions. Second operand has 9 states, 9 states have (on average 65.44444444444444) internal successors, (589), 9 states have internal predecessors, (589), 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 00:04:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:04:57,702 INFO L93 Difference]: Finished difference Result 3471 states and 5554 transitions. [2023-11-23 00:04:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 00:04:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 65.44444444444444) internal successors, (589), 9 states have internal predecessors, (589), 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 686 [2023-11-23 00:04:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:04:57,705 INFO L225 Difference]: With dead ends: 3471 [2023-11-23 00:04:57,705 INFO L226 Difference]: Without dead ends: 2502 [2023-11-23 00:04:57,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1395 GetRequests, 1387 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 00:04:57,706 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 8 mSDsluCounter, 5428 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:04:57,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6336 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:04:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2023-11-23 00:04:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2023-11-23 00:04:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2440 states have (on average 1.592622950819672) internal successors, (3886), 2440 states have internal predecessors, (3886), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:04:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4006 transitions. [2023-11-23 00:04:57,911 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4006 transitions. Word has length 686 [2023-11-23 00:04:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:04:57,911 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 4006 transitions. [2023-11-23 00:04:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.44444444444444) internal successors, (589), 9 states have internal predecessors, (589), 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 00:04:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4006 transitions. [2023-11-23 00:04:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-11-23 00:04:57,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:04:57,916 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:04:57,953 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 00:04:58,132 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,SelfDestructingSolverStorable39 [2023-11-23 00:04:58,137 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:04:58,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:58,138 INFO L85 PathProgramCache]: Analyzing trace with hash -670175319, now seen corresponding path program 2 times [2023-11-23 00:04:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:58,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375955266] [2023-11-23 00:04:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:58,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:04:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:04:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:04:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:04:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:04:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-11-23 00:04:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2023-11-23 00:04:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-11-23 00:04:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2023-11-23 00:04:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-11-23 00:04:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 179 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-23 00:04:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:58,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375955266] [2023-11-23 00:04:58,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375955266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:04:58,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161887786] [2023-11-23 00:04:58,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:04:58,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:58,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:58,864 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 00:04:58,889 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 00:04:59,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 00:04:59,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:04:59,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 3572 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 00:04:59,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 279 proven. 84 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-23 00:04:59,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:04:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 179 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-23 00:04:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161887786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:04:59,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:04:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-23 00:04:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542837168] [2023-11-23 00:04:59,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:04:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 00:04:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 00:04:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-23 00:04:59,892 INFO L87 Difference]: Start difference. First operand 2502 states and 4006 transitions. Second operand has 18 states, 18 states have (on average 33.55555555555556) internal successors, (604), 18 states have internal predecessors, (604), 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 00:05:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:00,169 INFO L93 Difference]: Finished difference Result 3478 states and 5562 transitions. [2023-11-23 00:05:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 00:05:00,169 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.55555555555556) internal successors, (604), 18 states have internal predecessors, (604), 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 689 [2023-11-23 00:05:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:00,172 INFO L225 Difference]: With dead ends: 3478 [2023-11-23 00:05:00,172 INFO L226 Difference]: Without dead ends: 2506 [2023-11-23 00:05:00,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1405 GetRequests, 1387 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-23 00:05:00,174 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 17 mSDsluCounter, 10078 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10998 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:00,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10998 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:05:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2023-11-23 00:05:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2023-11-23 00:05:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2444 states have (on average 1.5916530278232406) internal successors, (3890), 2444 states have internal predecessors, (3890), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 4010 transitions. [2023-11-23 00:05:00,387 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 4010 transitions. Word has length 689 [2023-11-23 00:05:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:00,388 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 4010 transitions. [2023-11-23 00:05:00,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.55555555555556) internal successors, (604), 18 states have internal predecessors, (604), 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 00:05:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 4010 transitions. [2023-11-23 00:05:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-23 00:05:00,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:00,393 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:00,414 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 00:05:00,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:05:00,603 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:00,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:00,604 INFO L85 PathProgramCache]: Analyzing trace with hash 351238057, now seen corresponding path program 3 times [2023-11-23 00:05:00,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:00,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542909832] [2023-11-23 00:05:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:00,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:05:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:05:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:05:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-23 00:05:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-11-23 00:05:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-23 00:05:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2023-11-23 00:05:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:05:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542909832] [2023-11-23 00:05:01,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542909832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:01,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:01,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 00:05:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975893160] [2023-11-23 00:05:01,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 00:05:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 00:05:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 00:05:01,951 INFO L87 Difference]: Start difference. First operand 2506 states and 4010 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 00:05:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:02,277 INFO L93 Difference]: Finished difference Result 3482 states and 5562 transitions. [2023-11-23 00:05:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:05:02,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 693 [2023-11-23 00:05:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:02,281 INFO L225 Difference]: With dead ends: 3482 [2023-11-23 00:05:02,281 INFO L226 Difference]: Without dead ends: 2506 [2023-11-23 00:05:02,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 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 00:05:02,283 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 894 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:02,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1672 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:05:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2023-11-23 00:05:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2023-11-23 00:05:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2444 states have (on average 1.5912438625204584) internal successors, (3889), 2444 states have internal predecessors, (3889), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 4009 transitions. [2023-11-23 00:05:02,429 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 4009 transitions. Word has length 693 [2023-11-23 00:05:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:02,429 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 4009 transitions. [2023-11-23 00:05:02,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 00:05:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 4009 transitions. [2023-11-23 00:05:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-23 00:05:02,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:02,435 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:02,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-23 00:05:02,436 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:02,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1177050471, now seen corresponding path program 1 times [2023-11-23 00:05:02,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:02,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139406832] [2023-11-23 00:05:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:05:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:05:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:05:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-23 00:05:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-11-23 00:05:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-23 00:05:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2023-11-23 00:05:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:05:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139406832] [2023-11-23 00:05:03,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139406832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:03,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 00:05:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515420469] [2023-11-23 00:05:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 00:05:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:03,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 00:05:03,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 00:05:03,716 INFO L87 Difference]: Start difference. First operand 2506 states and 4009 transitions. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 00:05:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:03,964 INFO L93 Difference]: Finished difference Result 3482 states and 5560 transitions. [2023-11-23 00:05:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 00:05:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 693 [2023-11-23 00:05:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:03,967 INFO L225 Difference]: With dead ends: 3482 [2023-11-23 00:05:03,967 INFO L226 Difference]: Without dead ends: 2506 [2023-11-23 00:05:03,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 00:05:03,973 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 589 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:03,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1664 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:05:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2023-11-23 00:05:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2023-11-23 00:05:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2444 states have (on average 1.590834697217676) internal successors, (3888), 2444 states have internal predecessors, (3888), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 4008 transitions. [2023-11-23 00:05:04,118 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 4008 transitions. Word has length 693 [2023-11-23 00:05:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:04,120 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 4008 transitions. [2023-11-23 00:05:04,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 00:05:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 4008 transitions. [2023-11-23 00:05:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-23 00:05:04,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:04,125 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:04,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-23 00:05:04,125 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:04,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash 533354729, now seen corresponding path program 1 times [2023-11-23 00:05:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:04,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837188734] [2023-11-23 00:05:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:04,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 00:05:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 00:05:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 00:05:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-23 00:05:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-11-23 00:05:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-23 00:05:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2023-11-23 00:05:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:05:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-11-23 00:05:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837188734] [2023-11-23 00:05:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837188734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:07,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:07,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 00:05:07,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46499759] [2023-11-23 00:05:07,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:05:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:07,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:05:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 00:05:07,371 INFO L87 Difference]: Start difference. First operand 2506 states and 4008 transitions. Second operand has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 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 00:05:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:08,024 INFO L93 Difference]: Finished difference Result 7967 states and 12765 transitions. [2023-11-23 00:05:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 00:05:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 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 693 [2023-11-23 00:05:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:08,031 INFO L225 Difference]: With dead ends: 7967 [2023-11-23 00:05:08,031 INFO L226 Difference]: Without dead ends: 6197 [2023-11-23 00:05:08,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-23 00:05:08,034 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 4529 mSDsluCounter, 6653 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4532 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:08,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4532 Valid, 8322 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 00:05:08,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6197 states. [2023-11-23 00:05:08,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6197 to 2602. [2023-11-23 00:05:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2540 states have (on average 1.5874015748031496) internal successors, (4032), 2540 states have internal predecessors, (4032), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 4152 transitions. [2023-11-23 00:05:08,198 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 4152 transitions. Word has length 693 [2023-11-23 00:05:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:08,198 INFO L495 AbstractCegarLoop]: Abstraction has 2602 states and 4152 transitions. [2023-11-23 00:05:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 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 00:05:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 4152 transitions. [2023-11-23 00:05:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-23 00:05:08,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:08,203 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:08,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-23 00:05:08,203 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:08,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash -730163745, now seen corresponding path program 1 times [2023-11-23 00:05:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:08,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179248531] [2023-11-23 00:05:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 00:05:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 00:05:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 00:05:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-23 00:05:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-23 00:05:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-23 00:05:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-23 00:05:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-23 00:05:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:10,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179248531] [2023-11-23 00:05:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179248531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:10,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:10,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 00:05:10,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409045] [2023-11-23 00:05:10,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:10,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:05:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:05:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:05:10,707 INFO L87 Difference]: Start difference. First operand 2602 states and 4152 transitions. Second operand has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 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 00:05:11,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:11,135 INFO L93 Difference]: Finished difference Result 5901 states and 9397 transitions. [2023-11-23 00:05:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:05:11,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 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 695 [2023-11-23 00:05:11,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:11,141 INFO L225 Difference]: With dead ends: 5901 [2023-11-23 00:05:11,141 INFO L226 Difference]: Without dead ends: 4901 [2023-11-23 00:05:11,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 00:05:11,143 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 2970 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 6089 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:11,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 6089 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:05:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2023-11-23 00:05:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3390. [2023-11-23 00:05:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3328 states have (on average 1.5895432692307692) internal successors, (5290), 3328 states have internal predecessors, (5290), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5410 transitions. [2023-11-23 00:05:11,394 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5410 transitions. Word has length 695 [2023-11-23 00:05:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:11,394 INFO L495 AbstractCegarLoop]: Abstraction has 3390 states and 5410 transitions. [2023-11-23 00:05:11,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 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 00:05:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5410 transitions. [2023-11-23 00:05:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-23 00:05:11,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:11,406 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:11,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-23 00:05:11,406 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:11,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash -168035777, now seen corresponding path program 1 times [2023-11-23 00:05:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358098905] [2023-11-23 00:05:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 00:05:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 00:05:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 00:05:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-11-23 00:05:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-11-23 00:05:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-23 00:05:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-11-23 00:05:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2023-11-23 00:05:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:13,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:13,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358098905] [2023-11-23 00:05:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358098905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 00:05:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451345104] [2023-11-23 00:05:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:13,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:05:13,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:05:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:05:13,539 INFO L87 Difference]: Start difference. First operand 3390 states and 5410 transitions. Second operand has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 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 00:05:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:14,572 INFO L93 Difference]: Finished difference Result 6408 states and 10207 transitions. [2023-11-23 00:05:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:05:14,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 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 696 [2023-11-23 00:05:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:14,578 INFO L225 Difference]: With dead ends: 6408 [2023-11-23 00:05:14,578 INFO L226 Difference]: Without dead ends: 4895 [2023-11-23 00:05:14,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 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 00:05:14,581 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 1370 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:14,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 3958 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 00:05:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2023-11-23 00:05:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 3542. [2023-11-23 00:05:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3480 states have (on average 1.5873563218390805) internal successors, (5524), 3480 states have internal predecessors, (5524), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 5644 transitions. [2023-11-23 00:05:14,805 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 5644 transitions. Word has length 696 [2023-11-23 00:05:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:14,806 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 5644 transitions. [2023-11-23 00:05:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 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 00:05:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 5644 transitions. [2023-11-23 00:05:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-23 00:05:14,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:14,812 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:14,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-23 00:05:14,813 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:14,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1224609101, now seen corresponding path program 1 times [2023-11-23 00:05:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785523508] [2023-11-23 00:05:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 00:05:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 00:05:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 00:05:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-23 00:05:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-23 00:05:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-23 00:05:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-23 00:05:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-23 00:05:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:17,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785523508] [2023-11-23 00:05:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785523508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:17,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 00:05:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422713312] [2023-11-23 00:05:17,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:17,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:05:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:05:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:05:17,228 INFO L87 Difference]: Start difference. First operand 3542 states and 5644 transitions. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 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 00:05:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:18,199 INFO L93 Difference]: Finished difference Result 6560 states and 10440 transitions. [2023-11-23 00:05:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:05:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 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 697 [2023-11-23 00:05:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:18,206 INFO L225 Difference]: With dead ends: 6560 [2023-11-23 00:05:18,206 INFO L226 Difference]: Without dead ends: 4895 [2023-11-23 00:05:18,209 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 00:05:18,210 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 1310 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:18,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 3930 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 00:05:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2023-11-23 00:05:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 3543. [2023-11-23 00:05:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3481 states have (on average 1.5871875897730536) internal successors, (5525), 3481 states have internal predecessors, (5525), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 00:05:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5645 transitions. [2023-11-23 00:05:18,436 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5645 transitions. Word has length 697 [2023-11-23 00:05:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:18,437 INFO L495 AbstractCegarLoop]: Abstraction has 3543 states and 5645 transitions. [2023-11-23 00:05:18,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 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 00:05:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5645 transitions. [2023-11-23 00:05:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-23 00:05:18,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:18,443 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:18,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-23 00:05:18,444 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:18,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -540648395, now seen corresponding path program 1 times [2023-11-23 00:05:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:18,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605142250] [2023-11-23 00:05:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 00:05:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 00:05:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 00:05:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-23 00:05:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-23 00:05:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-23 00:05:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-23 00:05:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-23 00:05:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:20,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605142250] [2023-11-23 00:05:20,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605142250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:20,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:20,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 00:05:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800596430] [2023-11-23 00:05:20,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:20,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 00:05:20,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 00:05:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:05:20,744 INFO L87 Difference]: Start difference. First operand 3543 states and 5645 transitions. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 00:05:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:22,239 INFO L93 Difference]: Finished difference Result 7143 states and 11334 transitions. [2023-11-23 00:05:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:05:22,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 697 [2023-11-23 00:05:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:22,258 INFO L225 Difference]: With dead ends: 7143 [2023-11-23 00:05:22,272 INFO L226 Difference]: Without dead ends: 5477 [2023-11-23 00:05:22,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-23 00:05:22,276 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 2235 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:22,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 5184 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 00:05:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2023-11-23 00:05:22,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 4049. [2023-11-23 00:05:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4049 states, 3972 states have (on average 1.5825780463242698) internal successors, (6286), 3972 states have internal predecessors, (6286), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:05:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4049 states to 4049 states and 6436 transitions. [2023-11-23 00:05:22,655 INFO L78 Accepts]: Start accepts. Automaton has 4049 states and 6436 transitions. Word has length 697 [2023-11-23 00:05:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:22,656 INFO L495 AbstractCegarLoop]: Abstraction has 4049 states and 6436 transitions. [2023-11-23 00:05:22,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 00:05:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4049 states and 6436 transitions. [2023-11-23 00:05:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-23 00:05:22,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:22,662 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:22,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-23 00:05:22,663 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:22,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 45820309, now seen corresponding path program 1 times [2023-11-23 00:05:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191821122] [2023-11-23 00:05:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 00:05:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 00:05:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 00:05:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-23 00:05:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-23 00:05:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-23 00:05:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-23 00:05:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-23 00:05:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191821122] [2023-11-23 00:05:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191821122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:25,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 00:05:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617792043] [2023-11-23 00:05:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:25,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 00:05:25,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 00:05:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:05:25,236 INFO L87 Difference]: Start difference. First operand 4049 states and 6436 transitions. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 00:05:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:26,641 INFO L93 Difference]: Finished difference Result 7649 states and 12123 transitions. [2023-11-23 00:05:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:05:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 698 [2023-11-23 00:05:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:26,646 INFO L225 Difference]: With dead ends: 7649 [2023-11-23 00:05:26,646 INFO L226 Difference]: Without dead ends: 5477 [2023-11-23 00:05:26,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-23 00:05:26,647 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 2174 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:26,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 5210 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 00:05:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2023-11-23 00:05:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 4051. [2023-11-23 00:05:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4051 states, 3974 states have (on average 1.5822848515349774) internal successors, (6288), 3974 states have internal predecessors, (6288), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:05:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 6438 transitions. [2023-11-23 00:05:26,994 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 6438 transitions. Word has length 698 [2023-11-23 00:05:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:26,995 INFO L495 AbstractCegarLoop]: Abstraction has 4051 states and 6438 transitions. [2023-11-23 00:05:26,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 00:05:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 6438 transitions. [2023-11-23 00:05:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-23 00:05:27,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:27,001 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-23 00:05:27,001 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:27,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1010910893, now seen corresponding path program 1 times [2023-11-23 00:05:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350748397] [2023-11-23 00:05:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 00:05:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 00:05:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 00:05:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 00:05:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-23 00:05:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-23 00:05:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-23 00:05:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-23 00:05:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-23 00:05:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-11-23 00:05:29,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350748397] [2023-11-23 00:05:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350748397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:29,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:29,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 00:05:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196356381] [2023-11-23 00:05:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 00:05:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 00:05:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:05:29,668 INFO L87 Difference]: Start difference. First operand 4051 states and 6438 transitions. Second operand has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 00:05:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:30,504 INFO L93 Difference]: Finished difference Result 7714 states and 12271 transitions. [2023-11-23 00:05:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:05:30,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 698 [2023-11-23 00:05:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:30,509 INFO L225 Difference]: With dead ends: 7714 [2023-11-23 00:05:30,509 INFO L226 Difference]: Without dead ends: 4111 [2023-11-23 00:05:30,512 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 00:05:30,513 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1681 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:30,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 2141 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 00:05:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2023-11-23 00:05:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4081. [2023-11-23 00:05:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4004 states have (on average 1.5741758241758241) internal successors, (6303), 4004 states have internal predecessors, (6303), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:05:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6453 transitions. [2023-11-23 00:05:30,866 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6453 transitions. Word has length 698 [2023-11-23 00:05:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:30,866 INFO L495 AbstractCegarLoop]: Abstraction has 4081 states and 6453 transitions. [2023-11-23 00:05:30,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 00:05:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6453 transitions. [2023-11-23 00:05:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-23 00:05:30,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:30,873 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-23 00:05:30,874 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:30,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 299899021, now seen corresponding path program 1 times [2023-11-23 00:05:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:30,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649219450] [2023-11-23 00:05:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:05:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:05:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-23 00:05:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-23 00:05:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-23 00:05:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-11-23 00:05:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2023-11-23 00:05:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-11-23 00:05:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2023-11-23 00:05:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-11-23 00:05:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649219450] [2023-11-23 00:05:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649219450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:05:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150058623] [2023-11-23 00:05:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:05:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:05:34,122 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 00:05:34,123 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 00:05:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:35,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 3630 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-23 00:05:35,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:05:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2023-11-23 00:05:35,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:05:35,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150058623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:05:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-11-23 00:05:35,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968677605] [2023-11-23 00:05:35,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:35,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 00:05:35,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 00:05:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-23 00:05:35,331 INFO L87 Difference]: Start difference. First operand 4081 states and 6453 transitions. Second operand has 9 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 00:05:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:36,320 INFO L93 Difference]: Finished difference Result 7406 states and 11698 transitions. [2023-11-23 00:05:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 00:05:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 700 [2023-11-23 00:05:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:36,325 INFO L225 Difference]: With dead ends: 7406 [2023-11-23 00:05:36,325 INFO L226 Difference]: Without dead ends: 4166 [2023-11-23 00:05:36,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-11-23 00:05:36,329 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1646 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:36,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 3842 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 00:05:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2023-11-23 00:05:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4136. [2023-11-23 00:05:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 4059 states have (on average 1.5614683419561468) internal successors, (6338), 4059 states have internal predecessors, (6338), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:05:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 6488 transitions. [2023-11-23 00:05:36,705 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 6488 transitions. Word has length 700 [2023-11-23 00:05:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:36,705 INFO L495 AbstractCegarLoop]: Abstraction has 4136 states and 6488 transitions. [2023-11-23 00:05:36,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 52.333333333333336) internal successors, (471), 9 states have internal predecessors, (471), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 00:05:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 6488 transitions. [2023-11-23 00:05:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-11-23 00:05:36,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:36,711 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:36,729 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 00:05:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:05:36,925 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:36,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -538174829, now seen corresponding path program 1 times [2023-11-23 00:05:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:36,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94587638] [2023-11-23 00:05:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:05:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:05:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:05:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 00:05:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-23 00:05:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2023-11-23 00:05:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2023-11-23 00:05:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2023-11-23 00:05:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2023-11-23 00:05:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2023-11-23 00:05:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94587638] [2023-11-23 00:05:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94587638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:39,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 00:05:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240325692] [2023-11-23 00:05:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:39,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 00:05:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 00:05:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 00:05:39,636 INFO L87 Difference]: Start difference. First operand 4136 states and 6488 transitions. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 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 00:05:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:40,558 INFO L93 Difference]: Finished difference Result 7140 states and 11207 transitions. [2023-11-23 00:05:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:05:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 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 702 [2023-11-23 00:05:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:40,563 INFO L225 Difference]: With dead ends: 7140 [2023-11-23 00:05:40,563 INFO L226 Difference]: Without dead ends: 4196 [2023-11-23 00:05:40,566 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 00:05:40,566 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1629 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:40,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2399 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 00:05:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2023-11-23 00:05:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 4166. [2023-11-23 00:05:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4166 states, 4089 states have (on average 1.553680606505258) internal successors, (6353), 4089 states have internal predecessors, (6353), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:05:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 6503 transitions. [2023-11-23 00:05:40,926 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 6503 transitions. Word has length 702 [2023-11-23 00:05:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:40,927 INFO L495 AbstractCegarLoop]: Abstraction has 4166 states and 6503 transitions. [2023-11-23 00:05:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 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 00:05:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 6503 transitions. [2023-11-23 00:05:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-11-23 00:05:40,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:40,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:40,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-23 00:05:40,934 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:40,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1881925697, now seen corresponding path program 1 times [2023-11-23 00:05:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433874766] [2023-11-23 00:05:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:05:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:05:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:05:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:05:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-23 00:05:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-11-23 00:05:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-23 00:05:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2023-11-23 00:05:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2023-11-23 00:05:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:43,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:43,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433874766] [2023-11-23 00:05:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433874766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:43,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 00:05:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567886392] [2023-11-23 00:05:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:43,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:05:43,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:05:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 00:05:43,549 INFO L87 Difference]: Start difference. First operand 4166 states and 6503 transitions. Second operand has 8 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 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 00:05:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:44,484 INFO L93 Difference]: Finished difference Result 8127 states and 12737 transitions. [2023-11-23 00:05:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:05:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 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 704 [2023-11-23 00:05:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:44,489 INFO L225 Difference]: With dead ends: 8127 [2023-11-23 00:05:44,489 INFO L226 Difference]: Without dead ends: 5082 [2023-11-23 00:05:44,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-23 00:05:44,492 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 1117 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:44,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 5905 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 00:05:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2023-11-23 00:05:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 4568. [2023-11-23 00:05:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4485 states have (on average 1.5556298773690078) internal successors, (6977), 4485 states have internal predecessors, (6977), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-23 00:05:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 7139 transitions. [2023-11-23 00:05:44,866 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 7139 transitions. Word has length 704 [2023-11-23 00:05:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:44,866 INFO L495 AbstractCegarLoop]: Abstraction has 4568 states and 7139 transitions. [2023-11-23 00:05:44,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 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 00:05:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 7139 transitions. [2023-11-23 00:05:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-11-23 00:05:44,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:44,873 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:44,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-23 00:05:44,874 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:44,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1186610371, now seen corresponding path program 1 times [2023-11-23 00:05:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955246383] [2023-11-23 00:05:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:44,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:05:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:05:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:05:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:05:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-23 00:05:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-11-23 00:05:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-23 00:05:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2023-11-23 00:05:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2023-11-23 00:05:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:47,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:47,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955246383] [2023-11-23 00:05:47,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955246383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:05:47,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:05:47,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 00:05:47,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152051777] [2023-11-23 00:05:47,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:05:47,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:05:47,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:05:47,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 00:05:47,670 INFO L87 Difference]: Start difference. First operand 4568 states and 7139 transitions. Second operand has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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 00:05:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:48,588 INFO L93 Difference]: Finished difference Result 12718 states and 20008 transitions. [2023-11-23 00:05:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:05:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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 704 [2023-11-23 00:05:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:48,596 INFO L225 Difference]: With dead ends: 12718 [2023-11-23 00:05:48,597 INFO L226 Difference]: Without dead ends: 10105 [2023-11-23 00:05:48,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-23 00:05:48,601 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2879 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 6161 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:48,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 6161 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 00:05:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10105 states. [2023-11-23 00:05:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10105 to 6014. [2023-11-23 00:05:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 5931 states have (on average 1.5692126117012308) internal successors, (9307), 5931 states have internal predecessors, (9307), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-23 00:05:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 9469 transitions. [2023-11-23 00:05:49,068 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 9469 transitions. Word has length 704 [2023-11-23 00:05:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:49,069 INFO L495 AbstractCegarLoop]: Abstraction has 6014 states and 9469 transitions. [2023-11-23 00:05:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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 00:05:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 9469 transitions. [2023-11-23 00:05:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-23 00:05:49,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:49,077 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:49,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-23 00:05:49,078 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:49,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -533012757, now seen corresponding path program 1 times [2023-11-23 00:05:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317652263] [2023-11-23 00:05:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:05:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:05:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:05:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:05:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:05:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:05:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-23 00:05:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:05:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:05:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-23 00:05:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:05:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:05:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317652263] [2023-11-23 00:05:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317652263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:05:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187810144] [2023-11-23 00:05:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:51,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:05:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:05:51,949 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 00:05:51,950 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 00:05:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:05:53,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 3648 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 00:05:53,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:05:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 153 proven. 8 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-11-23 00:05:54,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:05:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 124 proven. 4 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-11-23 00:05:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187810144] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:05:55,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:05:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 9] total 24 [2023-11-23 00:05:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418628527] [2023-11-23 00:05:55,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:05:55,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 00:05:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:05:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 00:05:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-23 00:05:55,032 INFO L87 Difference]: Start difference. First operand 6014 states and 9469 transitions. Second operand has 24 states, 24 states have (on average 59.333333333333336) internal successors, (1424), 24 states have internal predecessors, (1424), 5 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 00:05:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:05:56,742 INFO L93 Difference]: Finished difference Result 6060 states and 9513 transitions. [2023-11-23 00:05:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 00:05:56,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 59.333333333333336) internal successors, (1424), 24 states have internal predecessors, (1424), 5 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 705 [2023-11-23 00:05:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:05:56,748 INFO L225 Difference]: With dead ends: 6060 [2023-11-23 00:05:56,748 INFO L226 Difference]: Without dead ends: 5667 [2023-11-23 00:05:56,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1415 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 00:05:56,750 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 5408 mSDsluCounter, 5445 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5411 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 00:05:56,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5411 Valid, 6175 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 00:05:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5667 states. [2023-11-23 00:05:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5667 to 5627. [2023-11-23 00:05:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 5550 states have (on average 1.5672072072072072) internal successors, (8698), 5550 states have internal predecessors, (8698), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:05:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 8848 transitions. [2023-11-23 00:05:57,232 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 8848 transitions. Word has length 705 [2023-11-23 00:05:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:05:57,233 INFO L495 AbstractCegarLoop]: Abstraction has 5627 states and 8848 transitions. [2023-11-23 00:05:57,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.333333333333336) internal successors, (1424), 24 states have internal predecessors, (1424), 5 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 00:05:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 8848 transitions. [2023-11-23 00:05:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-23 00:05:57,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:05:57,240 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:05:57,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-23 00:05:57,441 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,SelfDestructingSolverStorable54 [2023-11-23 00:05:57,441 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:05:57,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:05:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 328820845, now seen corresponding path program 1 times [2023-11-23 00:05:57,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:05:57,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939818896] [2023-11-23 00:05:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:05:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:05:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:06:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:06:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:06:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:06:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:06:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:06:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-23 00:06:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:06:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:06:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-23 00:06:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 130 proven. 1 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-23 00:06:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:06:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939818896] [2023-11-23 00:06:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939818896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:06:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779656162] [2023-11-23 00:06:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:01,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:06:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:06:01,061 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 00:06:01,085 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 00:06:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:06,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 00:06:06,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:06:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-11-23 00:06:06,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:06:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779656162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:06:06,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:06:06,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 00:06:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166928112] [2023-11-23 00:06:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:06:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:06:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:06:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:06:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 00:06:06,443 INFO L87 Difference]: Start difference. First operand 5627 states and 8848 transitions. Second operand has 6 states, 5 states have (on average 115.6) internal successors, (578), 6 states have internal predecessors, (578), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 00:06:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:06:06,961 INFO L93 Difference]: Finished difference Result 10767 states and 16962 transitions. [2023-11-23 00:06:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:06:06,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 115.6) internal successors, (578), 6 states have internal predecessors, (578), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 705 [2023-11-23 00:06:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:06:06,966 INFO L225 Difference]: With dead ends: 10767 [2023-11-23 00:06:06,966 INFO L226 Difference]: Without dead ends: 5627 [2023-11-23 00:06:06,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 00:06:06,970 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2 mSDsluCounter, 3551 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4443 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:06:06,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4443 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:06:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2023-11-23 00:06:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 5597. [2023-11-23 00:06:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5520 states have (on average 1.5675724637681159) internal successors, (8653), 5520 states have internal predecessors, (8653), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:06:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 8803 transitions. [2023-11-23 00:06:07,406 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 8803 transitions. Word has length 705 [2023-11-23 00:06:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:06:07,406 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 8803 transitions. [2023-11-23 00:06:07,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 115.6) internal successors, (578), 6 states have internal predecessors, (578), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 00:06:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 8803 transitions. [2023-11-23 00:06:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-23 00:06:07,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:06:07,413 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:06:07,434 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 00:06:07,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:06:07,616 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:06:07,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:06:07,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1314213395, now seen corresponding path program 1 times [2023-11-23 00:06:07,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:06:07,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684568227] [2023-11-23 00:06:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:07,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:06:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:06:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:06:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:06:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:06:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:06:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:06:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-23 00:06:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:06:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:06:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-23 00:06:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:06:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:06:10,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684568227] [2023-11-23 00:06:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684568227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:06:10,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:06:10,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 00:06:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725293153] [2023-11-23 00:06:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:06:10,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:06:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:06:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:06:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 00:06:10,602 INFO L87 Difference]: Start difference. First operand 5597 states and 8803 transitions. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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 00:06:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:06:11,758 INFO L93 Difference]: Finished difference Result 13045 states and 20585 transitions. [2023-11-23 00:06:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 00:06:11,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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 705 [2023-11-23 00:06:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:06:11,765 INFO L225 Difference]: With dead ends: 13045 [2023-11-23 00:06:11,765 INFO L226 Difference]: Without dead ends: 7697 [2023-11-23 00:06:11,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-23 00:06:11,768 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1448 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 00:06:11,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 4324 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 00:06:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2023-11-23 00:06:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 6527. [2023-11-23 00:06:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6527 states, 6426 states have (on average 1.56411453470277) internal successors, (10051), 6426 states have internal predecessors, (10051), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-23 00:06:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6527 states to 6527 states and 10249 transitions. [2023-11-23 00:06:12,275 INFO L78 Accepts]: Start accepts. Automaton has 6527 states and 10249 transitions. Word has length 705 [2023-11-23 00:06:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:06:12,276 INFO L495 AbstractCegarLoop]: Abstraction has 6527 states and 10249 transitions. [2023-11-23 00:06:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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 00:06:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6527 states and 10249 transitions. [2023-11-23 00:06:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-23 00:06:12,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:06:12,285 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:06:12,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-23 00:06:12,285 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:06:12,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:06:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1725167215, now seen corresponding path program 1 times [2023-11-23 00:06:12,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:06:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596544689] [2023-11-23 00:06:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:06:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:06:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:06:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:06:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:06:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:06:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:06:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-23 00:06:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:06:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:06:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-23 00:06:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-23 00:06:15,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:06:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596544689] [2023-11-23 00:06:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596544689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:06:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814866265] [2023-11-23 00:06:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:15,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:06:15,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:06:15,236 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 00:06:15,237 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 00:06:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:16,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 3648 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-23 00:06:16,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:06:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-11-23 00:06:17,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:06:17,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814866265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:06:17,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:06:17,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 00:06:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569314851] [2023-11-23 00:06:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:06:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:06:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:06:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:06:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-23 00:06:17,253 INFO L87 Difference]: Start difference. First operand 6527 states and 10249 transitions. Second operand has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 00:06:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:06:18,094 INFO L93 Difference]: Finished difference Result 6548 states and 10268 transitions. [2023-11-23 00:06:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:06:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 705 [2023-11-23 00:06:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:06:18,100 INFO L225 Difference]: With dead ends: 6548 [2023-11-23 00:06:18,100 INFO L226 Difference]: Without dead ends: 5657 [2023-11-23 00:06:18,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 722 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-23 00:06:18,102 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 858 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 00:06:18,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2117 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 00:06:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2023-11-23 00:06:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 5642. [2023-11-23 00:06:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5565 states have (on average 1.562982929020665) internal successors, (8698), 5565 states have internal predecessors, (8698), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 00:06:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8848 transitions. [2023-11-23 00:06:18,548 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8848 transitions. Word has length 705 [2023-11-23 00:06:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:06:18,549 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 8848 transitions. [2023-11-23 00:06:18,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 00:06:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8848 transitions. [2023-11-23 00:06:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-23 00:06:18,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:06:18,556 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:06:18,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-23 00:06:18,763 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,SelfDestructingSolverStorable57 [2023-11-23 00:06:18,763 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:06:18,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:06:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1477199021, now seen corresponding path program 1 times [2023-11-23 00:06:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:06:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572638088] [2023-11-23 00:06:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:06:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:06:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:06:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:06:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:06:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:06:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:06:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-23 00:06:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:06:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:06:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-23 00:06:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 130 proven. 1 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-23 00:06:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:06:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572638088] [2023-11-23 00:06:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572638088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:06:22,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722840155] [2023-11-23 00:06:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:06:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:06:22,214 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 00:06:22,215 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 00:06:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:25,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 00:06:25,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:06:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-23 00:06:25,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:06:25,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722840155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:06:25,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:06:25,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 00:06:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191897945] [2023-11-23 00:06:25,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:06:25,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:06:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:06:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:06:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 00:06:25,409 INFO L87 Difference]: Start difference. First operand 5642 states and 8848 transitions. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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 00:06:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:06:27,383 INFO L93 Difference]: Finished difference Result 15357 states and 24013 transitions. [2023-11-23 00:06:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 00:06:27,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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 705 [2023-11-23 00:06:27,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:06:27,395 INFO L225 Difference]: With dead ends: 15357 [2023-11-23 00:06:27,395 INFO L226 Difference]: Without dead ends: 12097 [2023-11-23 00:06:27,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-23 00:06:27,399 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 2796 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 5608 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 00:06:27,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 5608 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 00:06:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12097 states. [2023-11-23 00:06:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12097 to 7805. [2023-11-23 00:06:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7805 states, 7683 states have (on average 1.562280359234674) internal successors, (12003), 7683 states have internal predecessors, (12003), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-23 00:06:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 12243 transitions. [2023-11-23 00:06:27,911 INFO L78 Accepts]: Start accepts. Automaton has 7805 states and 12243 transitions. Word has length 705 [2023-11-23 00:06:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:06:27,911 INFO L495 AbstractCegarLoop]: Abstraction has 7805 states and 12243 transitions. [2023-11-23 00:06:27,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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 00:06:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7805 states and 12243 transitions. [2023-11-23 00:06:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-23 00:06:27,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:06:27,921 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:06:27,936 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 00:06:28,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:06:28,137 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:06:28,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:06:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1044417233, now seen corresponding path program 1 times [2023-11-23 00:06:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:06:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139202816] [2023-11-23 00:06:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:28,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:06:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 00:06:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 00:06:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 00:06:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 00:06:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 00:06:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-23 00:06:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-23 00:06:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-23 00:06:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-23 00:06:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-23 00:06:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 130 proven. 1 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-23 00:06:31,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:06:31,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139202816] [2023-11-23 00:06:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139202816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:06:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50042021] [2023-11-23 00:06:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:31,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:06:31,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:06:31,683 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 00:06:31,684 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 00:06:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:06:34,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 3650 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 00:06:34,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:06:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-11-23 00:06:34,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 00:06:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50042021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:06:34,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 00:06:34,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 00:06:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508043074] [2023-11-23 00:06:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:06:34,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 00:06:34,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:06:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 00:06:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 00:06:34,165 INFO L87 Difference]: Start difference. First operand 7805 states and 12243 transitions. Second operand has 6 states, 5 states have (on average 111.2) internal successors, (556), 6 states have internal predecessors, (556), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 00:06:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 00:06:34,716 INFO L93 Difference]: Finished difference Result 14097 states and 22159 transitions. [2023-11-23 00:06:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 00:06:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 111.2) internal successors, (556), 6 states have internal predecessors, (556), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 705 [2023-11-23 00:06:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 00:06:34,724 INFO L225 Difference]: With dead ends: 14097 [2023-11-23 00:06:34,724 INFO L226 Difference]: Without dead ends: 7805 [2023-11-23 00:06:34,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 00:06:34,732 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 2 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 00:06:34,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4438 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 00:06:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7805 states. [2023-11-23 00:06:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7805 to 7805. [2023-11-23 00:06:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7805 states, 7683 states have (on average 1.559156579461148) internal successors, (11979), 7683 states have internal predecessors, (11979), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-23 00:06:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 12219 transitions. [2023-11-23 00:06:35,342 INFO L78 Accepts]: Start accepts. Automaton has 7805 states and 12219 transitions. Word has length 705 [2023-11-23 00:06:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 00:06:35,343 INFO L495 AbstractCegarLoop]: Abstraction has 7805 states and 12219 transitions. [2023-11-23 00:06:35,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 111.2) internal successors, (556), 6 states have internal predecessors, (556), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 00:06:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7805 states and 12219 transitions. [2023-11-23 00:06:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2023-11-23 00:06:35,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 00:06:35,353 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 00:06:35,376 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 00:06:35,571 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,SelfDestructingSolverStorable59 [2023-11-23 00:06:35,571 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 00:06:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:06:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash 463903793, now seen corresponding path program 1 times [2023-11-23 00:06:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:06:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6919293] [2023-11-23 00:06:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:06:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:06:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15