/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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:41:39,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:41:39,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:41:39,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:41:39,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:41:39,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:41:39,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:41:39,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:41:39,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:41:39,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:41:39,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:41:39,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:41:39,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:41:39,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:41:39,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:41:39,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:41:39,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:41:39,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:41:39,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:41:39,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:41:39,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:41:39,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:41:39,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:41:39,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:41:39,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:41:39,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:41:39,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:41:39,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:41:39,327 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 01:41:39,345 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:41:39,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:41:39,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:41:39,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:41:39,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:41:39,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:41:39,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:41:39,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:41:39,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:41:39,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:41:39,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:41:39,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:41:39,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:41:39,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:41:39,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:41:39,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:41:39,350 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:41:39,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:41:39,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:41:39,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:41:39,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:41:39,584 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:41:39,584 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:41:39,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 01:41:40,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:41:40,821 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:41:40,822 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 01:41:40,831 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72e2c566/40692f94ce59445a832aaf2e250d8e78/FLAG921b43947 [2023-03-31 01:41:40,841 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72e2c566/40692f94ce59445a832aaf2e250d8e78 [2023-03-31 01:41:40,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:41:40,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:41:40,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:41:40,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:41:40,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:41:40,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:41:40" (1/1) ... [2023-03-31 01:41:40,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af7e7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:40, skipping insertion in model container [2023-03-31 01:41:40,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:41:40" (1/1) ... [2023-03-31 01:41:40,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:41:40,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:41:41,185 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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14521,14534] [2023-03-31 01:41:41,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:41:41,301 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:41:41,387 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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14521,14534] [2023-03-31 01:41:41,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:41:41,435 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:41:41,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41 WrapperNode [2023-03-31 01:41:41,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:41:41,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:41:41,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:41:41,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:41:41,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:41:41,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:41:41,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:41:41,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:41:41,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (1/1) ... [2023-03-31 01:41:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:41:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:41:41,570 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 01:41:41,590 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 01:41:41,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:41:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:41:41,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:41:41,616 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:41:41,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:41:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:41:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:41:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:41:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:41:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:41:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:41:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:41:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:41:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:41:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:41:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:41:41,758 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:41:41,760 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:41:42,469 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:41:42,483 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:41:42,483 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:41:42,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:41:42 BoogieIcfgContainer [2023-03-31 01:41:42,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:41:42,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:41:42,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:41:42,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:41:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:41:40" (1/3) ... [2023-03-31 01:41:42,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6094d1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:41:42, skipping insertion in model container [2023-03-31 01:41:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:41:41" (2/3) ... [2023-03-31 01:41:42,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6094d1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:41:42, skipping insertion in model container [2023-03-31 01:41:42,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:41:42" (3/3) ... [2023-03-31 01:41:42,495 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 01:41:42,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:41:42,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:41:42,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:41:42,567 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;@29ff63a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:41:42,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:41:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 318 states, 304 states have (on average 1.7828947368421053) internal successors, (542), 313 states have internal predecessors, (542), 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 01:41:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 01:41:42,590 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:42,591 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] [2023-03-31 01:41:42,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:42,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1483895638, now seen corresponding path program 1 times [2023-03-31 01:41:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807098410] [2023-03-31 01:41:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:43,241 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 01:41:43,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:43,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807098410] [2023-03-31 01:41:43,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807098410] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:43,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:43,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:41:43,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556894472] [2023-03-31 01:41:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:41:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:41:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:43,278 INFO L87 Difference]: Start difference. First operand has 318 states, 304 states have (on average 1.7828947368421053) internal successors, (542), 313 states have internal predecessors, (542), 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 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 01:41:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:44,412 INFO L93 Difference]: Finished difference Result 629 states and 1058 transitions. [2023-03-31 01:41:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:41:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 148 [2023-03-31 01:41:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:44,426 INFO L225 Difference]: With dead ends: 629 [2023-03-31 01:41:44,426 INFO L226 Difference]: Without dead ends: 489 [2023-03-31 01:41:44,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:41:44,436 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 358 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:44,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 895 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:41:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-03-31 01:41:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2023-03-31 01:41:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 483 states have (on average 1.455486542443064) internal successors, (703), 483 states have internal predecessors, (703), 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 01:41:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 706 transitions. [2023-03-31 01:41:44,523 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 706 transitions. Word has length 148 [2023-03-31 01:41:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:44,524 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 706 transitions. [2023-03-31 01:41:44,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 01:41:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 706 transitions. [2023-03-31 01:41:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 01:41:44,527 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:44,527 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] [2023-03-31 01:41:44,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:41:44,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:44,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash 125345788, now seen corresponding path program 1 times [2023-03-31 01:41:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:44,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087740207] [2023-03-31 01:41:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:44,914 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 01:41:44,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087740207] [2023-03-31 01:41:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087740207] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:44,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:44,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:41:44,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878437353] [2023-03-31 01:41:44,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:41:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:41:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:44,918 INFO L87 Difference]: Start difference. First operand 487 states and 706 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 01:41:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:45,771 INFO L93 Difference]: Finished difference Result 1021 states and 1509 transitions. [2023-03-31 01:41:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:41:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 148 [2023-03-31 01:41:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:45,775 INFO L225 Difference]: With dead ends: 1021 [2023-03-31 01:41:45,775 INFO L226 Difference]: Without dead ends: 843 [2023-03-31 01:41:45,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:41:45,782 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 259 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:45,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 697 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:41:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-03-31 01:41:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2023-03-31 01:41:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 837 states have (on average 1.4611708482676224) internal successors, (1223), 837 states have internal predecessors, (1223), 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 01:41:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1226 transitions. [2023-03-31 01:41:45,826 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1226 transitions. Word has length 148 [2023-03-31 01:41:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:45,827 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1226 transitions. [2023-03-31 01:41:45,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 01:41:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1226 transitions. [2023-03-31 01:41:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 01:41:45,834 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:45,835 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] [2023-03-31 01:41:45,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:41:45,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:45,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash -771249869, now seen corresponding path program 1 times [2023-03-31 01:41:45,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:45,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824874748] [2023-03-31 01:41:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:45,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:46,302 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 01:41:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824874748] [2023-03-31 01:41:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824874748] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:41:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080478234] [2023-03-31 01:41:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:46,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:41:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:41:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:41:46,306 INFO L87 Difference]: Start difference. First operand 841 states and 1226 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 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 01:41:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:47,512 INFO L93 Difference]: Finished difference Result 2453 states and 3569 transitions. [2023-03-31 01:41:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:41:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 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 148 [2023-03-31 01:41:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:47,518 INFO L225 Difference]: With dead ends: 2453 [2023-03-31 01:41:47,518 INFO L226 Difference]: Without dead ends: 1625 [2023-03-31 01:41:47,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:41:47,522 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 861 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1130 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:41:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2023-03-31 01:41:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1623. [2023-03-31 01:41:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1619 states have (on average 1.4441012970969735) internal successors, (2338), 1619 states have internal predecessors, (2338), 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 01:41:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2341 transitions. [2023-03-31 01:41:47,622 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2341 transitions. Word has length 148 [2023-03-31 01:41:47,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:47,623 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2341 transitions. [2023-03-31 01:41:47,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 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 01:41:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2341 transitions. [2023-03-31 01:41:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-03-31 01:41:47,626 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:47,626 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] [2023-03-31 01:41:47,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:41:47,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:47,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1681136463, now seen corresponding path program 1 times [2023-03-31 01:41:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553559670] [2023-03-31 01:41:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:47,821 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 01:41:47,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553559670] [2023-03-31 01:41:47,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553559670] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:47,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:47,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:41:47,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264934520] [2023-03-31 01:41:47,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:47,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:41:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:41:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:47,823 INFO L87 Difference]: Start difference. First operand 1623 states and 2341 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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 01:41:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:49,157 INFO L93 Difference]: Finished difference Result 4823 states and 6953 transitions. [2023-03-31 01:41:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:41:49,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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 149 [2023-03-31 01:41:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:49,168 INFO L225 Difference]: With dead ends: 4823 [2023-03-31 01:41:49,168 INFO L226 Difference]: Without dead ends: 3232 [2023-03-31 01:41:49,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:49,172 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 420 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:49,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1277 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:41:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2023-03-31 01:41:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 1625. [2023-03-31 01:41:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1621 states have (on average 1.4435533621221468) internal successors, (2340), 1621 states have internal predecessors, (2340), 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 01:41:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2343 transitions. [2023-03-31 01:41:49,270 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2343 transitions. Word has length 149 [2023-03-31 01:41:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:49,270 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2343 transitions. [2023-03-31 01:41:49,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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 01:41:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2343 transitions. [2023-03-31 01:41:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:41:49,273 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:49,273 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] [2023-03-31 01:41:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:41:49,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:49,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 143811642, now seen corresponding path program 1 times [2023-03-31 01:41:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:49,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475924448] [2023-03-31 01:41:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:49,501 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 01:41:49,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:49,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475924448] [2023-03-31 01:41:49,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475924448] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:49,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:49,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:41:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987592119] [2023-03-31 01:41:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:49,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:41:49,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:41:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:49,503 INFO L87 Difference]: Start difference. First operand 1625 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:41:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:50,827 INFO L93 Difference]: Finished difference Result 4270 states and 6154 transitions. [2023-03-31 01:41:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:41:50,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-03-31 01:41:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:50,836 INFO L225 Difference]: With dead ends: 4270 [2023-03-31 01:41:50,836 INFO L226 Difference]: Without dead ends: 2827 [2023-03-31 01:41:50,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:50,840 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 359 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:50,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1175 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:41:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2023-03-31 01:41:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2023-03-31 01:41:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2821 states have (on average 1.423254165189649) internal successors, (4015), 2821 states have internal predecessors, (4015), 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 01:41:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4018 transitions. [2023-03-31 01:41:51,030 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4018 transitions. Word has length 150 [2023-03-31 01:41:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:51,031 INFO L495 AbstractCegarLoop]: Abstraction has 2825 states and 4018 transitions. [2023-03-31 01:41:51,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:41:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4018 transitions. [2023-03-31 01:41:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:41:51,034 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:51,035 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] [2023-03-31 01:41:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:41:51,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:51,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1480651031, now seen corresponding path program 1 times [2023-03-31 01:41:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499374272] [2023-03-31 01:41:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:51,451 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 01:41:51,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499374272] [2023-03-31 01:41:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499374272] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:51,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:41:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586789356] [2023-03-31 01:41:51,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:41:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:41:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:41:51,453 INFO L87 Difference]: Start difference. First operand 2825 states and 4018 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 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 01:41:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:52,888 INFO L93 Difference]: Finished difference Result 8092 states and 11483 transitions. [2023-03-31 01:41:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:41:52,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 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 150 [2023-03-31 01:41:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:52,905 INFO L225 Difference]: With dead ends: 8092 [2023-03-31 01:41:52,905 INFO L226 Difference]: Without dead ends: 5285 [2023-03-31 01:41:52,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:41:52,911 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1264 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:52,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1122 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:41:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2023-03-31 01:41:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 5283. [2023-03-31 01:41:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 5279 states have (on average 1.4042432278840689) internal successors, (7413), 5279 states have internal predecessors, (7413), 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 01:41:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 7416 transitions. [2023-03-31 01:41:53,322 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 7416 transitions. Word has length 150 [2023-03-31 01:41:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:53,322 INFO L495 AbstractCegarLoop]: Abstraction has 5283 states and 7416 transitions. [2023-03-31 01:41:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 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 01:41:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 7416 transitions. [2023-03-31 01:41:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:41:53,333 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:53,333 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] [2023-03-31 01:41:53,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:41:53,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:53,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1263390988, now seen corresponding path program 1 times [2023-03-31 01:41:53,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:53,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752280350] [2023-03-31 01:41:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:53,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:53,712 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 01:41:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752280350] [2023-03-31 01:41:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752280350] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:53,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:53,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:41:53,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093172042] [2023-03-31 01:41:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:53,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:41:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:41:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:41:53,715 INFO L87 Difference]: Start difference. First operand 5283 states and 7416 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 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 01:41:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:55,480 INFO L93 Difference]: Finished difference Result 15432 states and 21587 transitions. [2023-03-31 01:41:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:41:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 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 150 [2023-03-31 01:41:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:55,517 INFO L225 Difference]: With dead ends: 15432 [2023-03-31 01:41:55,518 INFO L226 Difference]: Without dead ends: 10209 [2023-03-31 01:41:55,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:41:55,528 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 845 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:55,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1111 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:41:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10209 states. [2023-03-31 01:41:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10209 to 10207. [2023-03-31 01:41:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 10203 states have (on average 1.3842987356659806) internal successors, (14124), 10203 states have internal predecessors, (14124), 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 01:41:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 14127 transitions. [2023-03-31 01:41:56,235 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 14127 transitions. Word has length 150 [2023-03-31 01:41:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:56,235 INFO L495 AbstractCegarLoop]: Abstraction has 10207 states and 14127 transitions. [2023-03-31 01:41:56,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 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 01:41:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 14127 transitions. [2023-03-31 01:41:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-03-31 01:41:56,249 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:56,249 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] [2023-03-31 01:41:56,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:41:56,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:56,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:56,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1904606832, now seen corresponding path program 1 times [2023-03-31 01:41:56,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:56,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011674113] [2023-03-31 01:41:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:56,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:56,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:56,458 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 01:41:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011674113] [2023-03-31 01:41:56,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011674113] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:56,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:41:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151594379] [2023-03-31 01:41:56,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:41:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:41:56,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:56,460 INFO L87 Difference]: Start difference. First operand 10207 states and 14127 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 01:41:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:41:58,553 INFO L93 Difference]: Finished difference Result 30461 states and 42140 transitions. [2023-03-31 01:41:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:41:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 151 [2023-03-31 01:41:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:41:58,598 INFO L225 Difference]: With dead ends: 30461 [2023-03-31 01:41:58,598 INFO L226 Difference]: Without dead ends: 20349 [2023-03-31 01:41:58,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:41:58,616 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 406 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:41:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 932 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:41:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20349 states. [2023-03-31 01:41:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20349 to 10217. [2023-03-31 01:41:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 10213 states have (on average 1.3839224517771467) internal successors, (14134), 10213 states have internal predecessors, (14134), 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 01:41:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 14137 transitions. [2023-03-31 01:41:59,513 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 14137 transitions. Word has length 151 [2023-03-31 01:41:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:41:59,515 INFO L495 AbstractCegarLoop]: Abstraction has 10217 states and 14137 transitions. [2023-03-31 01:41:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 01:41:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 14137 transitions. [2023-03-31 01:41:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-03-31 01:41:59,527 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:41:59,527 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] [2023-03-31 01:41:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:41:59,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:41:59,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:41:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1555089717, now seen corresponding path program 1 times [2023-03-31 01:41:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:41:59,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225180092] [2023-03-31 01:41:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:41:59,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:41:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:41:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:41:59,892 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 01:41:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:41:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225180092] [2023-03-31 01:41:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225180092] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:41:59,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:41:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:41:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589487607] [2023-03-31 01:41:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:41:59,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:41:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:41:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:41:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:41:59,894 INFO L87 Difference]: Start difference. First operand 10217 states and 14137 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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 01:42:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:42:02,499 INFO L93 Difference]: Finished difference Result 29761 states and 41050 transitions. [2023-03-31 01:42:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:42:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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 152 [2023-03-31 01:42:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:42:02,542 INFO L225 Difference]: With dead ends: 29761 [2023-03-31 01:42:02,542 INFO L226 Difference]: Without dead ends: 19649 [2023-03-31 01:42:02,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:42:02,560 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 839 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:42:02,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1100 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:42:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19649 states. [2023-03-31 01:42:04,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19649 to 19647. [2023-03-31 01:42:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19647 states, 19643 states have (on average 1.3638446265845339) internal successors, (26790), 19643 states have internal predecessors, (26790), 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 01:42:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19647 states to 19647 states and 26793 transitions. [2023-03-31 01:42:04,540 INFO L78 Accepts]: Start accepts. Automaton has 19647 states and 26793 transitions. Word has length 152 [2023-03-31 01:42:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:42:04,540 INFO L495 AbstractCegarLoop]: Abstraction has 19647 states and 26793 transitions. [2023-03-31 01:42:04,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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 01:42:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 19647 states and 26793 transitions. [2023-03-31 01:42:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-03-31 01:42:04,560 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:42:04,560 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] [2023-03-31 01:42:04,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:42:04,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:42:04,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:42:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1981763089, now seen corresponding path program 1 times [2023-03-31 01:42:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:42:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133206593] [2023-03-31 01:42:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:42:04,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:42:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:42:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:04,824 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 01:42:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:42:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133206593] [2023-03-31 01:42:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133206593] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:42:04,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:42:04,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:42:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815804798] [2023-03-31 01:42:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:42:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:42:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:42:04,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:42:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:42:04,826 INFO L87 Difference]: Start difference. First operand 19647 states and 26793 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 01:42:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:42:09,172 INFO L93 Difference]: Finished difference Result 57781 states and 78915 transitions. [2023-03-31 01:42:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:42:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 153 [2023-03-31 01:42:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:42:09,240 INFO L225 Difference]: With dead ends: 57781 [2023-03-31 01:42:09,240 INFO L226 Difference]: Without dead ends: 39013 [2023-03-31 01:42:09,264 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 01:42:09,265 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 392 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:42:09,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1249 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:42:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39013 states. [2023-03-31 01:42:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39013 to 19667. [2023-03-31 01:42:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19667 states, 19663 states have (on average 1.3634745461018156) internal successors, (26810), 19663 states have internal predecessors, (26810), 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 01:42:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19667 states to 19667 states and 26813 transitions. [2023-03-31 01:42:11,348 INFO L78 Accepts]: Start accepts. Automaton has 19667 states and 26813 transitions. Word has length 153 [2023-03-31 01:42:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:42:11,349 INFO L495 AbstractCegarLoop]: Abstraction has 19667 states and 26813 transitions. [2023-03-31 01:42:11,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 01:42:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 19667 states and 26813 transitions. [2023-03-31 01:42:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:42:11,365 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:42:11,365 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] [2023-03-31 01:42:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:42:11,366 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:42:11,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:42:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1200801951, now seen corresponding path program 1 times [2023-03-31 01:42:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:42:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255159797] [2023-03-31 01:42:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:42:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:42:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:42:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:11,803 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 01:42:11,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:42:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255159797] [2023-03-31 01:42:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255159797] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:42:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:42:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:42:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140211280] [2023-03-31 01:42:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:42:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:42:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:42:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:42:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:42:11,806 INFO L87 Difference]: Start difference. First operand 19667 states and 26813 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 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 01:42:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:42:15,142 INFO L93 Difference]: Finished difference Result 39927 states and 54279 transitions. [2023-03-31 01:42:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:42:15,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 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 154 [2023-03-31 01:42:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:42:15,176 INFO L225 Difference]: With dead ends: 39927 [2023-03-31 01:42:15,176 INFO L226 Difference]: Without dead ends: 20489 [2023-03-31 01:42:15,198 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 01:42:15,198 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 1243 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:42:15,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1102 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:42:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20489 states. [2023-03-31 01:42:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20489 to 20149. [2023-03-31 01:42:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20149 states, 20145 states have (on average 1.357210225862497) internal successors, (27341), 20145 states have internal predecessors, (27341), 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 01:42:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 27344 transitions. [2023-03-31 01:42:17,436 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 27344 transitions. Word has length 154 [2023-03-31 01:42:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:42:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 20149 states and 27344 transitions. [2023-03-31 01:42:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 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 01:42:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 27344 transitions. [2023-03-31 01:42:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:42:17,458 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:42:17,458 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] [2023-03-31 01:42:17,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:42:17,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:42:17,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:42:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 277264374, now seen corresponding path program 1 times [2023-03-31 01:42:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:42:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969749322] [2023-03-31 01:42:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:42:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:42:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:42:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:17,806 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 01:42:17,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:42:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969749322] [2023-03-31 01:42:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969749322] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:42:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:42:17,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:42:17,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233095918] [2023-03-31 01:42:17,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:42:17,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:42:17,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:42:17,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:42:17,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:42:17,808 INFO L87 Difference]: Start difference. First operand 20149 states and 27344 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 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 01:42:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:42:20,003 INFO L93 Difference]: Finished difference Result 34465 states and 46808 transitions. [2023-03-31 01:42:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:42:20,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 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 154 [2023-03-31 01:42:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:42:20,031 INFO L225 Difference]: With dead ends: 34465 [2023-03-31 01:42:20,031 INFO L226 Difference]: Without dead ends: 14492 [2023-03-31 01:42:20,053 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 01:42:20,053 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 65 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:42:20,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1331 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:42:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14492 states. [2023-03-31 01:42:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14492 to 14492. [2023-03-31 01:42:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14492 states, 14488 states have (on average 1.3571231363887355) internal successors, (19662), 14488 states have internal predecessors, (19662), 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 01:42:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14492 states to 14492 states and 19665 transitions. [2023-03-31 01:42:21,604 INFO L78 Accepts]: Start accepts. Automaton has 14492 states and 19665 transitions. Word has length 154 [2023-03-31 01:42:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:42:21,604 INFO L495 AbstractCegarLoop]: Abstraction has 14492 states and 19665 transitions. [2023-03-31 01:42:21,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 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 01:42:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 14492 states and 19665 transitions. [2023-03-31 01:42:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-03-31 01:42:21,618 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:42:21,618 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 01:42:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:42:21,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:42:21,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:42:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash -915282605, now seen corresponding path program 1 times [2023-03-31 01:42:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:42:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556176411] [2023-03-31 01:42:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:42:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:42:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:21,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:42:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:21,859 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 01:42:21,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:42:21,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556176411] [2023-03-31 01:42:21,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556176411] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:42:21,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:42:21,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:42:21,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045955538] [2023-03-31 01:42:21,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:42:21,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:42:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:42:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:42:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:42:21,862 INFO L87 Difference]: Start difference. First operand 14492 states and 19665 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 01:42:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:42:25,785 INFO L93 Difference]: Finished difference Result 38522 states and 52290 transitions. [2023-03-31 01:42:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:42:25,786 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 01:42:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:42:25,825 INFO L225 Difference]: With dead ends: 38522 [2023-03-31 01:42:25,825 INFO L226 Difference]: Without dead ends: 25384 [2023-03-31 01:42:25,842 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 01:42:25,842 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 349 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:42:25,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1198 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:42:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25384 states. [2023-03-31 01:42:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25384 to 25382. [2023-03-31 01:42:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25382 states, 25378 states have (on average 1.3339506659311215) internal successors, (33853), 25378 states have internal predecessors, (33853), 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 01:42:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25382 states to 25382 states and 33856 transitions. [2023-03-31 01:42:28,629 INFO L78 Accepts]: Start accepts. Automaton has 25382 states and 33856 transitions. Word has length 162 [2023-03-31 01:42:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:42:28,630 INFO L495 AbstractCegarLoop]: Abstraction has 25382 states and 33856 transitions. [2023-03-31 01:42:28,630 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 01:42:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 25382 states and 33856 transitions. [2023-03-31 01:42:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-03-31 01:42:28,647 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:42:28,647 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 01:42:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:42:28,647 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:42:28,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:42:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1926218224, now seen corresponding path program 1 times [2023-03-31 01:42:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:42:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821611029] [2023-03-31 01:42:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:42:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:42:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:42:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:42:28,915 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 01:42:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:42:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821611029] [2023-03-31 01:42:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821611029] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:42:28,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:42:28,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:42:28,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664742202] [2023-03-31 01:42:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:42:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:42:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:42:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:42:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:42:28,917 INFO L87 Difference]: Start difference. First operand 25382 states and 33856 transitions. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 5 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 01:42:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:42:35,466 INFO L93 Difference]: Finished difference Result 54394 states and 76844 transitions. [2023-03-31 01:42:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:42:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 5 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 01:42:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:42:35,535 INFO L225 Difference]: With dead ends: 54394 [2023-03-31 01:42:35,536 INFO L226 Difference]: Without dead ends: 45128 [2023-03-31 01:42:35,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:42:35,557 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 778 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:42:35,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1570 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:42:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45128 states. [2023-03-31 01:42:40,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45128 to 34370. [2023-03-31 01:42:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34370 states, 34366 states have (on average 1.3659139847523716) internal successors, (46941), 34366 states have internal predecessors, (46941), 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 01:42:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34370 states to 34370 states and 46944 transitions. [2023-03-31 01:42:40,160 INFO L78 Accepts]: Start accepts. Automaton has 34370 states and 46944 transitions. Word has length 162 [2023-03-31 01:42:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:42:40,160 INFO L495 AbstractCegarLoop]: Abstraction has 34370 states and 46944 transitions. [2023-03-31 01:42:40,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 5 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 01:42:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 34370 states and 46944 transitions.