/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:00:43,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:00:43,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:00:43,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 02:00:43,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 02:00:43,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 02:00:43,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 02:00:43,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 02:00:43,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 02:00:43,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 02:00:43,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 02:00:43,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 02:00:43,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:00:43,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:00:43,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:00:43,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:00:43,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:00:43,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:00:43,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:00:43,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:00:43,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:00:43,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:00:43,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:00:43,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:00:43,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:00:43,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:00:43,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:00:43,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:00:43,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 02:00:43,522 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:00:43,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:00:43,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:00:43,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:00:43,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:00:43,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:00:43,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:00:43,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:00:43,525 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:00:43,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:00:43,526 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:00:43,527 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:00:43,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:00:43,528 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:00:43,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:00:43,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:00:43,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:00:43,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:00:43,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:00:43,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:00:43,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:00:43,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:00:43,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:00:43,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:00:43,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:00:43,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:00:43,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:00:43,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:00:43,531 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:00:43,531 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:00:43,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:00:43,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:00:43,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:00:43,813 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:00:43,813 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:00:43,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 02:00:44,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:00:45,258 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:00:45,258 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 02:00:45,269 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4451dd953/15cd502fc13c4e0bb90faf81587ac721/FLAGe0bf540ed [2023-03-31 02:00:45,282 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4451dd953/15cd502fc13c4e0bb90faf81587ac721 [2023-03-31 02:00:45,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:00:45,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:00:45,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:00:45,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:00:45,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:00:45,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:45,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d3b020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45, skipping insertion in model container [2023-03-31 02:00:45,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:45,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:00:45,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:00:45,608 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2023-03-31 02:00:45,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:00:45,703 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:00:45,819 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2023-03-31 02:00:45,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:00:45,966 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:00:45,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45 WrapperNode [2023-03-31 02:00:45,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:00:45,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:00:45,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:00:45,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:00:45,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:45,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:00:46,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:00:46,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:00:46,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:00:46,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (1/1) ... [2023-03-31 02:00:46,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:00:46,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:00:46,114 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) [2023-03-31 02:00:46,169 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 [2023-03-31 02:00:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:00:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:00:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:00:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:00:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:00:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:00:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:00:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:00:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:00:46,340 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:00:46,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:00:47,371 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:00:47,381 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:00:47,381 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:00:47,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:00:47 BoogieIcfgContainer [2023-03-31 02:00:47,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:00:47,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:00:47,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:00:47,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:00:47,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:00:45" (1/3) ... [2023-03-31 02:00:47,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bd1ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:00:47, skipping insertion in model container [2023-03-31 02:00:47,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:45" (2/3) ... [2023-03-31 02:00:47,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bd1ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:00:47, skipping insertion in model container [2023-03-31 02:00:47,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:00:47" (3/3) ... [2023-03-31 02:00:47,391 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 02:00:47,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:00:47,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 02:00:47,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:00:47,487 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=LoopsAndPotentialCycles, 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;@193a6d44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:00:47,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 02:00:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 336 states have (on average 1.7708333333333333) internal successors, (595), 345 states have internal predecessors, (595), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 02:00:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 02:00:47,517 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:47,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:47,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:47,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1353286226, now seen corresponding path program 1 times [2023-03-31 02:00:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831944105] [2023-03-31 02:00:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:48,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831944105] [2023-03-31 02:00:48,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831944105] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:48,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:48,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7765950] [2023-03-31 02:00:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:48,531 INFO L87 Difference]: Start difference. First operand has 350 states, 336 states have (on average 1.7708333333333333) internal successors, (595), 345 states have internal predecessors, (595), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:50,160 INFO L93 Difference]: Finished difference Result 711 states and 1192 transitions. [2023-03-31 02:00:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:50,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-03-31 02:00:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:50,186 INFO L225 Difference]: With dead ends: 711 [2023-03-31 02:00:50,186 INFO L226 Difference]: Without dead ends: 550 [2023-03-31 02:00:50,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:50,197 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 411 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:50,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 993 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:00:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-03-31 02:00:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 548. [2023-03-31 02:00:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 544 states have (on average 1.4669117647058822) internal successors, (798), 544 states have internal predecessors, (798), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 801 transitions. [2023-03-31 02:00:50,306 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 801 transitions. Word has length 157 [2023-03-31 02:00:50,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:50,309 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 801 transitions. [2023-03-31 02:00:50,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 801 transitions. [2023-03-31 02:00:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 02:00:50,322 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:50,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:00:50,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:50,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2088358822, now seen corresponding path program 1 times [2023-03-31 02:00:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:50,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100445897] [2023-03-31 02:00:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100445897] [2023-03-31 02:00:50,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100445897] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:50,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:50,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:50,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525211270] [2023-03-31 02:00:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:50,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:50,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:50,808 INFO L87 Difference]: Start difference. First operand 548 states and 801 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:52,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:52,221 INFO L93 Difference]: Finished difference Result 1146 states and 1704 transitions. [2023-03-31 02:00:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-03-31 02:00:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:52,227 INFO L225 Difference]: With dead ends: 1146 [2023-03-31 02:00:52,227 INFO L226 Difference]: Without dead ends: 946 [2023-03-31 02:00:52,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:52,230 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 300 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:52,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 780 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 02:00:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-03-31 02:00:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 944. [2023-03-31 02:00:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 940 states have (on average 1.4723404255319148) internal successors, (1384), 940 states have internal predecessors, (1384), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1387 transitions. [2023-03-31 02:00:52,276 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1387 transitions. Word has length 157 [2023-03-31 02:00:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:52,276 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1387 transitions. [2023-03-31 02:00:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1387 transitions. [2023-03-31 02:00:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 02:00:52,279 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:52,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:52,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:00:52,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:52,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash 312155054, now seen corresponding path program 1 times [2023-03-31 02:00:52,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:52,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931897466] [2023-03-31 02:00:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:52,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:52,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:52,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931897466] [2023-03-31 02:00:52,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931897466] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:52,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:52,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:52,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823756277] [2023-03-31 02:00:52,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:52,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:52,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:52,925 INFO L87 Difference]: Start difference. First operand 944 states and 1387 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:54,575 INFO L93 Difference]: Finished difference Result 2754 states and 4036 transitions. [2023-03-31 02:00:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:54,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2023-03-31 02:00:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:54,583 INFO L225 Difference]: With dead ends: 2754 [2023-03-31 02:00:54,584 INFO L226 Difference]: Without dead ends: 1823 [2023-03-31 02:00:54,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:54,587 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 961 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:54,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1265 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 02:00:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2023-03-31 02:00:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1821. [2023-03-31 02:00:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1817 states have (on average 1.4545954870665934) internal successors, (2643), 1817 states have internal predecessors, (2643), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2646 transitions. [2023-03-31 02:00:54,704 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2646 transitions. Word has length 157 [2023-03-31 02:00:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:54,704 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2646 transitions. [2023-03-31 02:00:54,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2646 transitions. [2023-03-31 02:00:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 02:00:54,708 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:54,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:00:54,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:54,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1395268880, now seen corresponding path program 1 times [2023-03-31 02:00:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635211018] [2023-03-31 02:00:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:54,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:54,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:54,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635211018] [2023-03-31 02:00:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635211018] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:54,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:54,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615730207] [2023-03-31 02:00:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:54,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:54,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:54,977 INFO L87 Difference]: Start difference. First operand 1821 states and 2646 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:56,860 INFO L93 Difference]: Finished difference Result 5417 states and 7868 transitions. [2023-03-31 02:00:56,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:56,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158 [2023-03-31 02:00:56,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:56,875 INFO L225 Difference]: With dead ends: 5417 [2023-03-31 02:00:56,875 INFO L226 Difference]: Without dead ends: 3628 [2023-03-31 02:00:56,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:56,888 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 470 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1427 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-31 02:00:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2023-03-31 02:00:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 1823. [2023-03-31 02:00:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1819 states have (on average 1.4540956569543706) internal successors, (2645), 1819 states have internal predecessors, (2645), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2648 transitions. [2023-03-31 02:00:57,032 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2648 transitions. Word has length 158 [2023-03-31 02:00:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:57,032 INFO L495 AbstractCegarLoop]: Abstraction has 1823 states and 2648 transitions. [2023-03-31 02:00:57,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2648 transitions. [2023-03-31 02:00:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-31 02:00:57,035 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:57,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:00:57,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:57,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash -816974888, now seen corresponding path program 1 times [2023-03-31 02:00:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127488660] [2023-03-31 02:00:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:57,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:57,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:57,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127488660] [2023-03-31 02:00:57,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127488660] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:57,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:57,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:57,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202702373] [2023-03-31 02:00:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:57,388 INFO L87 Difference]: Start difference. First operand 1823 states and 2648 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:59,299 INFO L93 Difference]: Finished difference Result 5146 states and 7469 transitions. [2023-03-31 02:00:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2023-03-31 02:00:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:59,314 INFO L225 Difference]: With dead ends: 5146 [2023-03-31 02:00:59,315 INFO L226 Difference]: Without dead ends: 3522 [2023-03-31 02:00:59,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:59,319 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 405 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:59,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1353 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-31 02:00:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2023-03-31 02:00:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3520. [2023-03-31 02:00:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3516 states have (on average 1.4368600682593857) internal successors, (5052), 3516 states have internal predecessors, (5052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 5055 transitions. [2023-03-31 02:00:59,575 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 5055 transitions. Word has length 159 [2023-03-31 02:00:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:59,575 INFO L495 AbstractCegarLoop]: Abstraction has 3520 states and 5055 transitions. [2023-03-31 02:00:59,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 5055 transitions. [2023-03-31 02:00:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-31 02:00:59,581 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:59,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:59,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:00:59,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:59,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1352896411, now seen corresponding path program 1 times [2023-03-31 02:00:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:59,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008088440] [2023-03-31 02:00:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008088440] [2023-03-31 02:01:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008088440] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:00,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:00,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 02:01:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754158501] [2023-03-31 02:01:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:01:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:01:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:00,208 INFO L87 Difference]: Start difference. First operand 3520 states and 5055 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:02,185 INFO L93 Difference]: Finished difference Result 10105 states and 14464 transitions. [2023-03-31 02:01:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:02,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2023-03-31 02:01:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:02,209 INFO L225 Difference]: With dead ends: 10105 [2023-03-31 02:01:02,209 INFO L226 Difference]: Without dead ends: 6603 [2023-03-31 02:01:02,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:02,217 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 1005 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:02,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1684 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 02:01:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2023-03-31 02:01:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6601. [2023-03-31 02:01:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6601 states, 6597 states have (on average 1.4170077307867213) internal successors, (9348), 6597 states have internal predecessors, (9348), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 9351 transitions. [2023-03-31 02:01:02,781 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 9351 transitions. Word has length 159 [2023-03-31 02:01:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 6601 states and 9351 transitions. [2023-03-31 02:01:02,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 9351 transitions. [2023-03-31 02:01:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-31 02:01:02,791 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:02,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:01:02,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:02,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 765379277, now seen corresponding path program 1 times [2023-03-31 02:01:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753017814] [2023-03-31 02:01:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:03,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753017814] [2023-03-31 02:01:03,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753017814] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:03,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:03,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:01:03,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569502252] [2023-03-31 02:01:03,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:03,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:01:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:01:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:03,313 INFO L87 Difference]: Start difference. First operand 6601 states and 9351 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:05,542 INFO L93 Difference]: Finished difference Result 19260 states and 27156 transitions. [2023-03-31 02:01:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:05,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2023-03-31 02:01:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:05,591 INFO L225 Difference]: With dead ends: 19260 [2023-03-31 02:01:05,592 INFO L226 Difference]: Without dead ends: 12719 [2023-03-31 02:01:05,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:05,607 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 999 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:05,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1194 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:01:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12719 states. [2023-03-31 02:01:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12719 to 12717. [2023-03-31 02:01:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12713 states have (on average 1.3955793282466766) internal successors, (17742), 12713 states have internal predecessors, (17742), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 17745 transitions. [2023-03-31 02:01:06,609 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 17745 transitions. Word has length 159 [2023-03-31 02:01:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:06,609 INFO L495 AbstractCegarLoop]: Abstraction has 12717 states and 17745 transitions. [2023-03-31 02:01:06,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 17745 transitions. [2023-03-31 02:01:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-03-31 02:01:06,627 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:06,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:01:06,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:06,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1099351761, now seen corresponding path program 1 times [2023-03-31 02:01:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388020144] [2023-03-31 02:01:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:06,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:06,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388020144] [2023-03-31 02:01:06,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388020144] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:06,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:06,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224553695] [2023-03-31 02:01:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:06,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:06,914 INFO L87 Difference]: Start difference. First operand 12717 states and 17745 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:09,498 INFO L93 Difference]: Finished difference Result 37991 states and 52994 transitions. [2023-03-31 02:01:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:01:09,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160 [2023-03-31 02:01:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:09,558 INFO L225 Difference]: With dead ends: 37991 [2023-03-31 02:01:09,558 INFO L226 Difference]: Without dead ends: 25369 [2023-03-31 02:01:09,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:09,585 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 456 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:09,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1165 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:01:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25369 states. [2023-03-31 02:01:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25369 to 12727. [2023-03-31 02:01:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 12723 states have (on average 1.3952684115381593) internal successors, (17752), 12723 states have internal predecessors, (17752), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 17755 transitions. [2023-03-31 02:01:10,797 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 17755 transitions. Word has length 160 [2023-03-31 02:01:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:10,797 INFO L495 AbstractCegarLoop]: Abstraction has 12727 states and 17755 transitions. [2023-03-31 02:01:10,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 17755 transitions. [2023-03-31 02:01:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-03-31 02:01:10,815 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:10,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:10,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 02:01:10,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:10,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:10,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1063160468, now seen corresponding path program 1 times [2023-03-31 02:01:10,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:10,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825901341] [2023-03-31 02:01:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:10,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825901341] [2023-03-31 02:01:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825901341] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:01:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465900879] [2023-03-31 02:01:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:01:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:01:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:11,395 INFO L87 Difference]: Start difference. First operand 12727 states and 17755 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:14,320 INFO L93 Difference]: Finished difference Result 34485 states and 47878 transitions. [2023-03-31 02:01:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2023-03-31 02:01:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:14,370 INFO L225 Difference]: With dead ends: 34485 [2023-03-31 02:01:14,371 INFO L226 Difference]: Without dead ends: 21863 [2023-03-31 02:01:14,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:14,399 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 947 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:14,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1227 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21863 states. [2023-03-31 02:01:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21863 to 21861. [2023-03-31 02:01:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21861 states, 21857 states have (on average 1.370727913254335) internal successors, (29960), 21857 states have internal predecessors, (29960), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21861 states to 21861 states and 29963 transitions. [2023-03-31 02:01:16,418 INFO L78 Accepts]: Start accepts. Automaton has 21861 states and 29963 transitions. Word has length 161 [2023-03-31 02:01:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:16,418 INFO L495 AbstractCegarLoop]: Abstraction has 21861 states and 29963 transitions. [2023-03-31 02:01:16,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 21861 states and 29963 transitions. [2023-03-31 02:01:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-03-31 02:01:16,446 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:16,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:16,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 02:01:16,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:16,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash -286448914, now seen corresponding path program 1 times [2023-03-31 02:01:16,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:16,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247250629] [2023-03-31 02:01:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:16,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247250629] [2023-03-31 02:01:16,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247250629] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:16,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086461826] [2023-03-31 02:01:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:16,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:16,721 INFO L87 Difference]: Start difference. First operand 21861 states and 29963 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:21,216 INFO L93 Difference]: Finished difference Result 64349 states and 88319 transitions. [2023-03-31 02:01:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:01:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2023-03-31 02:01:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:21,309 INFO L225 Difference]: With dead ends: 64349 [2023-03-31 02:01:21,310 INFO L226 Difference]: Without dead ends: 43435 [2023-03-31 02:01:21,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:21,355 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 442 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:21,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1399 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:01:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43435 states. [2023-03-31 02:01:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43435 to 21881. [2023-03-31 02:01:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21881 states, 21877 states have (on average 1.3703889930063538) internal successors, (29980), 21877 states have internal predecessors, (29980), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21881 states to 21881 states and 29983 transitions. [2023-03-31 02:01:23,519 INFO L78 Accepts]: Start accepts. Automaton has 21881 states and 29983 transitions. Word has length 162 [2023-03-31 02:01:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:23,519 INFO L495 AbstractCegarLoop]: Abstraction has 21881 states and 29983 transitions. [2023-03-31 02:01:23,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 21881 states and 29983 transitions. [2023-03-31 02:01:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-03-31 02:01:23,543 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:23,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:23,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 02:01:23,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:23,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:23,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1049455343, now seen corresponding path program 1 times [2023-03-31 02:01:23,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:23,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089594158] [2023-03-31 02:01:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:24,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089594158] [2023-03-31 02:01:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089594158] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:24,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 02:01:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117307924] [2023-03-31 02:01:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:24,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:01:24,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:01:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:24,032 INFO L87 Difference]: Start difference. First operand 21881 states and 29983 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:27,452 INFO L93 Difference]: Finished difference Result 44445 states and 60757 transitions. [2023-03-31 02:01:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2023-03-31 02:01:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:27,494 INFO L225 Difference]: With dead ends: 44445 [2023-03-31 02:01:27,494 INFO L226 Difference]: Without dead ends: 22793 [2023-03-31 02:01:27,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:27,527 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1002 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:27,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1657 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22793 states. [2023-03-31 02:01:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22793 to 22413. [2023-03-31 02:01:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22413 states, 22409 states have (on average 1.3646749074032756) internal successors, (30581), 22409 states have internal predecessors, (30581), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22413 states to 22413 states and 30584 transitions. [2023-03-31 02:01:29,488 INFO L78 Accepts]: Start accepts. Automaton has 22413 states and 30584 transitions. Word has length 163 [2023-03-31 02:01:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:29,488 INFO L495 AbstractCegarLoop]: Abstraction has 22413 states and 30584 transitions. [2023-03-31 02:01:29,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22413 states and 30584 transitions. [2023-03-31 02:01:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-03-31 02:01:29,509 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:29,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:29,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 02:01:29,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:29,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1761348725, now seen corresponding path program 1 times [2023-03-31 02:01:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:29,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359963758] [2023-03-31 02:01:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359963758] [2023-03-31 02:01:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359963758] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:29,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:01:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461992551] [2023-03-31 02:01:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:29,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:01:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:01:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:29,967 INFO L87 Difference]: Start difference. First operand 22413 states and 30584 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:32,131 INFO L93 Difference]: Finished difference Result 36728 states and 50140 transitions. [2023-03-31 02:01:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:32,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2023-03-31 02:01:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:32,155 INFO L225 Difference]: With dead ends: 36728 [2023-03-31 02:01:32,155 INFO L226 Difference]: Without dead ends: 14500 [2023-03-31 02:01:32,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:32,180 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 65 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:32,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1481 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 02:01:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2023-03-31 02:01:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 14500. [2023-03-31 02:01:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14500 states, 14496 states have (on average 1.3633416114790287) internal successors, (19763), 14496 states have internal predecessors, (19763), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14500 states to 14500 states and 19766 transitions. [2023-03-31 02:01:33,593 INFO L78 Accepts]: Start accepts. Automaton has 14500 states and 19766 transitions. Word has length 163 [2023-03-31 02:01:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:33,593 INFO L495 AbstractCegarLoop]: Abstraction has 14500 states and 19766 transitions. [2023-03-31 02:01:33,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 14500 states and 19766 transitions. [2023-03-31 02:01:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-03-31 02:01:33,603 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:33,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:33,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 02:01:33,604 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:33,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1699543540, now seen corresponding path program 1 times [2023-03-31 02:01:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341911557] [2023-03-31 02:01:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341911557] [2023-03-31 02:01:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341911557] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:33,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:33,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789641329] [2023-03-31 02:01:33,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:33,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:33,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:33,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:33,883 INFO L87 Difference]: Start difference. First operand 14500 states and 19766 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:36,982 INFO L93 Difference]: Finished difference Result 35754 states and 49550 transitions. [2023-03-31 02:01:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:01:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2023-03-31 02:01:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:37,011 INFO L225 Difference]: With dead ends: 35754 [2023-03-31 02:01:37,011 INFO L226 Difference]: Without dead ends: 22224 [2023-03-31 02:01:37,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:37,026 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 299 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:37,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1018 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:01:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22224 states.