/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/pals_floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:02:59,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:02:59,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:02:59,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:02:59,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:02:59,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:02:59,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:02:59,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:02:59,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:02:59,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:02:59,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:02:59,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:02:59,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:02:59,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:02:59,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:02:59,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:02:59,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:02:59,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:02:59,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:02:59,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:02:59,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:02:59,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:02:59,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:02:59,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:02:59,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:02:59,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:02:59,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:02:59,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:02:59,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:02:59,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:02:59,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:02:59,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:02:59,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:02:59,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:02:59,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:02:59,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:02:59,413 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 [2023-04-02 05:02:59,440 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:02:59,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:02:59,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:02:59,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:02:59,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:02:59,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:02:59,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:02:59,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:02:59,442 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:02:59,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:02:59,443 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:02:59,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:02:59,444 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:02:59,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:02:59,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:02:59,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:02:59,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:02:59,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:02:59,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:02:59,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:02:59,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:02:59,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:02:59,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:02:59,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:02:59,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:02:59,447 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:02:59,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:02:59,447 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:02:59,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:02:59,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:02:59,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:02:59,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:02:59,724 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:02:59,724 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:02:59,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:03:00,923 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:03:01,171 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:03:01,171 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:03:01,178 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfe9971c/50a4f132dab74a2cb20f74e3e02ef318/FLAG15f87d495 [2023-04-02 05:03:01,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfe9971c/50a4f132dab74a2cb20f74e3e02ef318 [2023-04-02 05:03:01,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:03:01,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:03:01,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:03:01,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:03:01,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:03:01,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630be42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01, skipping insertion in model container [2023-04-02 05:03:01,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:03:01,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:03:01,440 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/pals_floodmax.3.ufo.BOUNDED-6.pals.c[12762,12775] [2023-04-02 05:03:01,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:03:01,451 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:03:01,520 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/pals_floodmax.3.ufo.BOUNDED-6.pals.c[12762,12775] [2023-04-02 05:03:01,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:03:01,539 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:03:01,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01 WrapperNode [2023-04-02 05:03:01,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:03:01,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:03:01,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:03:01,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:03:01,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:03:01,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:03:01,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:03:01,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:03:01,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (1/1) ... [2023-04-02 05:03:01,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:03:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:03:01,643 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) [2023-04-02 05:03:01,671 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 [2023-04-02 05:03:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:03:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:03:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:03:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:03:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:03:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:03:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:03:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:03:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:03:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:03:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:03:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:03:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:03:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:03:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:03:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:03:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:03:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:03:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:03:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:03:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:03:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:03:01,836 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:03:01,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:03:02,316 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:03:02,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:03:02,324 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:03:02,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:03:02 BoogieIcfgContainer [2023-04-02 05:03:02,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:03:02,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:03:02,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:03:02,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:03:02,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:03:01" (1/3) ... [2023-04-02 05:03:02,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a55df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:03:02, skipping insertion in model container [2023-04-02 05:03:02,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:03:01" (2/3) ... [2023-04-02 05:03:02,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a55df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:03:02, skipping insertion in model container [2023-04-02 05:03:02,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:03:02" (3/3) ... [2023-04-02 05:03:02,338 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:03:02,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:03:02,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:03:02,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:03:02,404 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;@16b97532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:03:02,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:03:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 125 states have (on average 1.736) internal successors, (217), 126 states have internal predecessors, (217), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:03:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 05:03:02,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:02,426 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] [2023-04-02 05:03:02,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:02,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2044428657, now seen corresponding path program 1 times [2023-04-02 05:03:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267659081] [2023-04-02 05:03:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:03:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 05:03:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:03:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:03:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:03,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:03,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267659081] [2023-04-02 05:03:03,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267659081] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:03,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:03,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:03:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200663990] [2023-04-02 05:03:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:03,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:03:03,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:03:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:03:03,174 INFO L87 Difference]: Start difference. First operand has 143 states, 125 states have (on average 1.736) internal successors, (217), 126 states have internal predecessors, (217), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:04,004 INFO L93 Difference]: Finished difference Result 228 states and 366 transitions. [2023-04-02 05:03:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:03:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2023-04-02 05:03:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:04,017 INFO L225 Difference]: With dead ends: 228 [2023-04-02 05:03:04,018 INFO L226 Difference]: Without dead ends: 144 [2023-04-02 05:03:04,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:03:04,026 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 698 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:04,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 65 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:03:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-04-02 05:03:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2023-04-02 05:03:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 122 states have (on average 1.721311475409836) internal successors, (210), 122 states have internal predecessors, (210), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:03:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 225 transitions. [2023-04-02 05:03:04,109 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 225 transitions. Word has length 58 [2023-04-02 05:03:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:04,111 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 225 transitions. [2023-04-02 05:03:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 225 transitions. [2023-04-02 05:03:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 05:03:04,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:04,120 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] [2023-04-02 05:03:04,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:03:04,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:04,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1972042099, now seen corresponding path program 1 times [2023-04-02 05:03:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536596722] [2023-04-02 05:03:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:04,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:03:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 05:03:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:03:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:03:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:04,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:04,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536596722] [2023-04-02 05:03:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536596722] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:04,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:04,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:03:04,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944700974] [2023-04-02 05:03:04,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:04,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:03:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:03:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:03:04,620 INFO L87 Difference]: Start difference. First operand 138 states and 225 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:05,760 INFO L93 Difference]: Finished difference Result 232 states and 369 transitions. [2023-04-02 05:03:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:03:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2023-04-02 05:03:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:05,766 INFO L225 Difference]: With dead ends: 232 [2023-04-02 05:03:05,767 INFO L226 Difference]: Without dead ends: 153 [2023-04-02 05:03:05,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:03:05,772 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 711 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:05,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 91 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:03:05,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-04-02 05:03:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2023-04-02 05:03:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 122 states have (on average 1.5) internal successors, (183), 122 states have internal predecessors, (183), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:03:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 198 transitions. [2023-04-02 05:03:05,800 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 198 transitions. Word has length 58 [2023-04-02 05:03:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:05,801 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 198 transitions. [2023-04-02 05:03:05,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 198 transitions. [2023-04-02 05:03:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 05:03:05,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:05,803 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] [2023-04-02 05:03:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:03:05,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:05,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 182326474, now seen corresponding path program 1 times [2023-04-02 05:03:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457742119] [2023-04-02 05:03:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:03:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:03:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:03:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457742119] [2023-04-02 05:03:06,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457742119] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:06,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:06,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:03:06,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204756037] [2023-04-02 05:03:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:06,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:03:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:03:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:03:06,247 INFO L87 Difference]: Start difference. First operand 138 states and 198 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:08,195 INFO L93 Difference]: Finished difference Result 298 states and 447 transitions. [2023-04-02 05:03:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:03:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 84 [2023-04-02 05:03:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:08,199 INFO L225 Difference]: With dead ends: 298 [2023-04-02 05:03:08,199 INFO L226 Difference]: Without dead ends: 225 [2023-04-02 05:03:08,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:08,206 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 484 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:08,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 71 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:03:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-04-02 05:03:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 205. [2023-04-02 05:03:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 178 states have (on average 1.5112359550561798) internal successors, (269), 179 states have internal predecessors, (269), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-02 05:03:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 296 transitions. [2023-04-02 05:03:08,286 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 296 transitions. Word has length 84 [2023-04-02 05:03:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:08,286 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 296 transitions. [2023-04-02 05:03:08,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 296 transitions. [2023-04-02 05:03:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 05:03:08,288 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:08,289 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] [2023-04-02 05:03:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:03:08,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:08,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash 549802130, now seen corresponding path program 1 times [2023-04-02 05:03:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941266727] [2023-04-02 05:03:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:08,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:03:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:03:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:08,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:08,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941266727] [2023-04-02 05:03:08,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941266727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:08,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:08,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:03:08,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810739216] [2023-04-02 05:03:08,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:08,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:03:08,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:08,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:03:08,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:03:08,735 INFO L87 Difference]: Start difference. First operand 205 states and 296 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:10,081 INFO L93 Difference]: Finished difference Result 505 states and 746 transitions. [2023-04-02 05:03:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:03:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 86 [2023-04-02 05:03:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:10,084 INFO L225 Difference]: With dead ends: 505 [2023-04-02 05:03:10,084 INFO L226 Difference]: Without dead ends: 365 [2023-04-02 05:03:10,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:10,085 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 882 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:10,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 63 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:03:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-04-02 05:03:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 333. [2023-04-02 05:03:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 283 states have (on average 1.530035335689046) internal successors, (433), 287 states have internal predecessors, (433), 23 states have call successors, (23), 23 states have call predecessors, (23), 26 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2023-04-02 05:03:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 486 transitions. [2023-04-02 05:03:10,150 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 486 transitions. Word has length 86 [2023-04-02 05:03:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:10,151 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 486 transitions. [2023-04-02 05:03:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 486 transitions. [2023-04-02 05:03:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 05:03:10,152 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:10,153 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] [2023-04-02 05:03:10,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:03:10,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:10,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 647831930, now seen corresponding path program 1 times [2023-04-02 05:03:10,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:10,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180526658] [2023-04-02 05:03:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:03:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:10,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180526658] [2023-04-02 05:03:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180526658] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:03:10,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431132460] [2023-04-02 05:03:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:10,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:03:10,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:10,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:03:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:03:10,645 INFO L87 Difference]: Start difference. First operand 333 states and 486 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:12,082 INFO L93 Difference]: Finished difference Result 909 states and 1340 transitions. [2023-04-02 05:03:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:03:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 88 [2023-04-02 05:03:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:12,088 INFO L225 Difference]: With dead ends: 909 [2023-04-02 05:03:12,088 INFO L226 Difference]: Without dead ends: 641 [2023-04-02 05:03:12,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:12,090 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 482 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:12,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 70 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:03:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-02 05:03:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 579. [2023-04-02 05:03:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 481 states have (on average 1.528066528066528) internal successors, (735), 493 states have internal predecessors, (735), 43 states have call successors, (43), 43 states have call predecessors, (43), 54 states have return successors, (66), 42 states have call predecessors, (66), 42 states have call successors, (66) [2023-04-02 05:03:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 844 transitions. [2023-04-02 05:03:12,171 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 844 transitions. Word has length 88 [2023-04-02 05:03:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:12,172 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 844 transitions. [2023-04-02 05:03:12,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 844 transitions. [2023-04-02 05:03:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:03:12,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:12,173 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] [2023-04-02 05:03:12,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:03:12,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:12,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash 252360514, now seen corresponding path program 1 times [2023-04-02 05:03:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:12,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297284691] [2023-04-02 05:03:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:12,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:03:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297284691] [2023-04-02 05:03:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297284691] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:12,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:12,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:03:12,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597977953] [2023-04-02 05:03:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:03:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:03:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:03:12,724 INFO L87 Difference]: Start difference. First operand 579 states and 844 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 9 states have internal predecessors, (76), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:17,406 INFO L93 Difference]: Finished difference Result 3428 states and 5191 transitions. [2023-04-02 05:03:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-02 05:03:17,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 9 states have internal predecessors, (76), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 90 [2023-04-02 05:03:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:17,426 INFO L225 Difference]: With dead ends: 3428 [2023-04-02 05:03:17,427 INFO L226 Difference]: Without dead ends: 2914 [2023-04-02 05:03:17,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 05:03:17,431 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2815 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:17,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2824 Valid, 126 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 05:03:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2023-04-02 05:03:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2594. [2023-04-02 05:03:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2123 states have (on average 1.5482807348092322) internal successors, (3287), 2188 states have internal predecessors, (3287), 203 states have call successors, (203), 203 states have call predecessors, (203), 267 states have return successors, (434), 202 states have call predecessors, (434), 202 states have call successors, (434) [2023-04-02 05:03:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3924 transitions. [2023-04-02 05:03:17,739 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3924 transitions. Word has length 90 [2023-04-02 05:03:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:17,742 INFO L495 AbstractCegarLoop]: Abstraction has 2594 states and 3924 transitions. [2023-04-02 05:03:17,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 9 states have internal predecessors, (76), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3924 transitions. [2023-04-02 05:03:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:03:17,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:17,744 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] [2023-04-02 05:03:17,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:03:17,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:17,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 290229565, now seen corresponding path program 1 times [2023-04-02 05:03:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104759040] [2023-04-02 05:03:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:03:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:18,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104759040] [2023-04-02 05:03:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104759040] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:18,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:18,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:03:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782561172] [2023-04-02 05:03:18,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:18,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:03:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:03:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:03:18,250 INFO L87 Difference]: Start difference. First operand 2594 states and 3924 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:21,560 INFO L93 Difference]: Finished difference Result 8194 states and 12483 transitions. [2023-04-02 05:03:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 05:03:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2023-04-02 05:03:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:21,586 INFO L225 Difference]: With dead ends: 8194 [2023-04-02 05:03:21,586 INFO L226 Difference]: Without dead ends: 5665 [2023-04-02 05:03:21,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:03:21,593 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 869 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:21,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 138 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 05:03:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2023-04-02 05:03:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5095. [2023-04-02 05:03:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 4147 states have (on average 1.5420786110441282) internal successors, (6395), 4289 states have internal predecessors, (6395), 403 states have call successors, (403), 403 states have call predecessors, (403), 544 states have return successors, (928), 402 states have call predecessors, (928), 402 states have call successors, (928) [2023-04-02 05:03:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7726 transitions. [2023-04-02 05:03:22,274 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7726 transitions. Word has length 91 [2023-04-02 05:03:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:22,274 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 7726 transitions. [2023-04-02 05:03:22,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:03:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7726 transitions. [2023-04-02 05:03:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:03:22,279 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:22,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:03:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:03:22,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:22,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -359746124, now seen corresponding path program 1 times [2023-04-02 05:03:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429593175] [2023-04-02 05:03:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:03:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429593175] [2023-04-02 05:03:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429593175] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:22,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:22,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:03:22,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854867273] [2023-04-02 05:03:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:22,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:03:22,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:22,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:03:22,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:03:22,612 INFO L87 Difference]: Start difference. First operand 5095 states and 7726 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:25,535 INFO L93 Difference]: Finished difference Result 17911 states and 27742 transitions. [2023-04-02 05:03:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:03:25,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 91 [2023-04-02 05:03:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:25,613 INFO L225 Difference]: With dead ends: 17911 [2023-04-02 05:03:25,613 INFO L226 Difference]: Without dead ends: 12881 [2023-04-02 05:03:25,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:25,634 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1092 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:25,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 120 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:03:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12881 states. [2023-04-02 05:03:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12881 to 11787. [2023-04-02 05:03:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11787 states, 9592 states have (on average 1.5109466221851542) internal successors, (14493), 9908 states have internal predecessors, (14493), 939 states have call successors, (939), 939 states have call predecessors, (939), 1255 states have return successors, (2277), 939 states have call predecessors, (2277), 938 states have call successors, (2277) [2023-04-02 05:03:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11787 states to 11787 states and 17709 transitions. [2023-04-02 05:03:27,052 INFO L78 Accepts]: Start accepts. Automaton has 11787 states and 17709 transitions. Word has length 91 [2023-04-02 05:03:27,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:27,052 INFO L495 AbstractCegarLoop]: Abstraction has 11787 states and 17709 transitions. [2023-04-02 05:03:27,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11787 states and 17709 transitions. [2023-04-02 05:03:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:03:27,061 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:27,061 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] [2023-04-02 05:03:27,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:03:27,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:27,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1230719811, now seen corresponding path program 1 times [2023-04-02 05:03:27,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:27,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238332072] [2023-04-02 05:03:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:03:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:03:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:27,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238332072] [2023-04-02 05:03:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238332072] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:03:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981761647] [2023-04-02 05:03:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:27,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:03:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:27,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:03:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:03:27,361 INFO L87 Difference]: Start difference. First operand 11787 states and 17709 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:31,744 INFO L93 Difference]: Finished difference Result 39899 states and 61174 transitions. [2023-04-02 05:03:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:03:31,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 91 [2023-04-02 05:03:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:31,927 INFO L225 Difference]: With dead ends: 39899 [2023-04-02 05:03:31,927 INFO L226 Difference]: Without dead ends: 28748 [2023-04-02 05:03:31,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:31,979 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 702 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:31,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 121 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:03:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28748 states. [2023-04-02 05:03:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28748 to 26810. [2023-04-02 05:03:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26810 states, 21780 states have (on average 1.4764462809917356) internal successors, (32157), 22481 states have internal predecessors, (32157), 2163 states have call successors, (2163), 2163 states have call predecessors, (2163), 2866 states have return successors, (5497), 2165 states have call predecessors, (5497), 2162 states have call successors, (5497) [2023-04-02 05:03:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26810 states to 26810 states and 39817 transitions. [2023-04-02 05:03:34,885 INFO L78 Accepts]: Start accepts. Automaton has 26810 states and 39817 transitions. Word has length 91 [2023-04-02 05:03:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:34,886 INFO L495 AbstractCegarLoop]: Abstraction has 26810 states and 39817 transitions. [2023-04-02 05:03:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 26810 states and 39817 transitions. [2023-04-02 05:03:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:03:34,902 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:34,902 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] [2023-04-02 05:03:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:03:34,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:34,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:34,903 INFO L85 PathProgramCache]: Analyzing trace with hash -432132682, now seen corresponding path program 1 times [2023-04-02 05:03:34,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:34,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659106234] [2023-04-02 05:03:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:03:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:35,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:35,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659106234] [2023-04-02 05:03:35,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659106234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:35,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:03:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331227474] [2023-04-02 05:03:35,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:35,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:03:35,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:03:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:03:35,193 INFO L87 Difference]: Start difference. First operand 26810 states and 39817 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:03:42,779 INFO L93 Difference]: Finished difference Result 92381 states and 140707 transitions. [2023-04-02 05:03:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:03:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 91 [2023-04-02 05:03:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:03:43,085 INFO L225 Difference]: With dead ends: 92381 [2023-04-02 05:03:43,085 INFO L226 Difference]: Without dead ends: 65951 [2023-04-02 05:03:43,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:03:43,169 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1055 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:03:43,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 127 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:03:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65951 states. [2023-04-02 05:03:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65951 to 61761. [2023-04-02 05:03:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61761 states, 50248 states have (on average 1.4476198057634135) internal successors, (72740), 51788 states have internal predecessors, (72740), 4983 states have call successors, (4983), 4983 states have call predecessors, (4983), 6529 states have return successors, (13279), 4989 states have call predecessors, (13279), 4982 states have call successors, (13279) [2023-04-02 05:03:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61761 states to 61761 states and 91002 transitions. [2023-04-02 05:03:49,816 INFO L78 Accepts]: Start accepts. Automaton has 61761 states and 91002 transitions. Word has length 91 [2023-04-02 05:03:49,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:03:49,817 INFO L495 AbstractCegarLoop]: Abstraction has 61761 states and 91002 transitions. [2023-04-02 05:03:49,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:03:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 61761 states and 91002 transitions. [2023-04-02 05:03:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:03:49,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:03:49,851 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] [2023-04-02 05:03:49,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:03:49,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:03:49,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:03:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -291584072, now seen corresponding path program 1 times [2023-04-02 05:03:49,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:03:49,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289596610] [2023-04-02 05:03:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:03:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:03:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:03:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:03:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:03:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:03:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:03:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:03:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:03:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:03:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:03:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289596610] [2023-04-02 05:03:50,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289596610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:03:50,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:03:50,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:03:50,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492058981] [2023-04-02 05:03:50,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:03:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:03:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:03:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:03:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:03:50,295 INFO L87 Difference]: Start difference. First operand 61761 states and 91002 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:04:01,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:04:01,739 INFO L93 Difference]: Finished difference Result 112955 states and 164160 transitions. [2023-04-02 05:04:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-02 05:04:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 91 [2023-04-02 05:04:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:04:02,125 INFO L225 Difference]: With dead ends: 112955 [2023-04-02 05:04:02,126 INFO L226 Difference]: Without dead ends: 84497 [2023-04-02 05:04:02,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=794, Invalid=3628, Unknown=0, NotChecked=0, Total=4422 [2023-04-02 05:04:02,217 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2183 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:04:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 190 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 05:04:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84497 states. [2023-04-02 05:04:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84497 to 77969. [2023-04-02 05:04:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77969 states, 63676 states have (on average 1.4513474464476412) internal successors, (92416), 65468 states have internal predecessors, (92416), 6247 states have call successors, (6247), 6247 states have call predecessors, (6247), 8045 states have return successors, (15955), 6253 states have call predecessors, (15955), 6246 states have call successors, (15955) [2023-04-02 05:04:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77969 states to 77969 states and 114618 transitions. [2023-04-02 05:04:10,095 INFO L78 Accepts]: Start accepts. Automaton has 77969 states and 114618 transitions. Word has length 91 [2023-04-02 05:04:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:04:10,095 INFO L495 AbstractCegarLoop]: Abstraction has 77969 states and 114618 transitions. [2023-04-02 05:04:10,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:04:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 77969 states and 114618 transitions. [2023-04-02 05:04:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:04:10,130 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:04:10,130 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] [2023-04-02 05:04:10,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:04:10,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:04:10,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:04:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash 820264187, now seen corresponding path program 1 times [2023-04-02 05:04:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:04:10,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015147737] [2023-04-02 05:04:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:04:10,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:04:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:04:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:04:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:04:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:04:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:04:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:04:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:04:10,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:04:10,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015147737] [2023-04-02 05:04:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015147737] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:04:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:04:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:04:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699841458] [2023-04-02 05:04:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:04:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:04:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:04:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:04:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:04:10,398 INFO L87 Difference]: Start difference. First operand 77969 states and 114618 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:04:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:04:28,772 INFO L93 Difference]: Finished difference Result 263480 states and 395102 transitions. [2023-04-02 05:04:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:04:28,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 91 [2023-04-02 05:04:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:04:29,861 INFO L225 Difference]: With dead ends: 263480 [2023-04-02 05:04:29,861 INFO L226 Difference]: Without dead ends: 186956 [2023-04-02 05:04:30,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:04:30,011 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1213 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:04:30,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 130 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:04:30,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186956 states. [2023-04-02 05:04:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186956 to 175728. [2023-04-02 05:04:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175728 states, 143587 states have (on average 1.4178024472967607) internal successors, (203578), 147463 states have internal predecessors, (203578), 14125 states have call successors, (14125), 14125 states have call predecessors, (14125), 18015 states have return successors, (37873), 14139 states have call predecessors, (37873), 14124 states have call successors, (37873) [2023-04-02 05:04:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175728 states to 175728 states and 255576 transitions. [2023-04-02 05:04:49,751 INFO L78 Accepts]: Start accepts. Automaton has 175728 states and 255576 transitions. Word has length 91 [2023-04-02 05:04:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:04:49,751 INFO L495 AbstractCegarLoop]: Abstraction has 175728 states and 255576 transitions. [2023-04-02 05:04:49,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:04:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 175728 states and 255576 transitions. [2023-04-02 05:04:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:04:50,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:04:50,261 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] [2023-04-02 05:04:50,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:04:50,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:04:50,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:04:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash -200804167, now seen corresponding path program 1 times [2023-04-02 05:04:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:04:50,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717448665] [2023-04-02 05:04:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:04:50,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:04:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:04:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:04:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:04:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:04:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:04:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:04:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:04:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:04:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:04:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717448665] [2023-04-02 05:04:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717448665] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:04:50,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:04:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:04:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192958958] [2023-04-02 05:04:50,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:04:50,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:04:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:04:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:04:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:04:50,715 INFO L87 Difference]: Start difference. First operand 175728 states and 255576 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)