/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:42:54,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:42:54,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:42:54,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:42:54,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:42:54,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:42:54,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:42:54,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:42:54,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:42:54,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:42:54,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:42:54,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:42:54,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:42:54,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:42:54,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:42:54,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:42:54,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:42:54,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:42:54,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:42:54,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:42:54,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:42:54,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:42:54,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:42:54,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:42:54,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:42:54,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:42:54,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:42:54,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:42:54,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:42:54,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:42:54,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:42:54,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:42:54,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:42:54,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:42:54,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:42:54,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:42:54,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:42:54,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:42:54,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:42:54,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:42:54,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:42:54,301 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 06:42:54,328 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:42:54,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:42:54,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:42:54,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:42:54,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:42:54,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:42:54,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:42:54,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:42:54,331 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:42:54,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:42:54,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:42:54,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:42:54,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:42:54,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:42:54,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:42:54,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:42:54,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:42:54,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:42:54,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:42:54,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:42:54,335 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:42:54,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:42:54,335 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:42:54,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:42:54,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:42:54,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:42:54,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:42:54,594 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:42:54,594 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:42:54,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2023-04-02 06:42:55,793 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:42:55,997 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:42:55,998 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2023-04-02 06:42:56,016 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd6b775c/7744781f5ba44b7ca0d5de866736286a/FLAGdc4c2243a [2023-04-02 06:42:56,027 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd6b775c/7744781f5ba44b7ca0d5de866736286a [2023-04-02 06:42:56,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:42:56,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:42:56,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:42:56,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:42:56,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:42:56,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155ebc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56, skipping insertion in model container [2023-04-02 06:42:56,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:42:56,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:42:56,301 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10527,10540] [2023-04-02 06:42:56,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:42:56,371 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:42:56,449 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10527,10540] [2023-04-02 06:42:56,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:42:56,495 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:42:56,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56 WrapperNode [2023-04-02 06:42:56,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:42:56,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:42:56,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:42:56,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:42:56,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,560 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:42:56,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:42:56,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:42:56,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:42:56,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (1/1) ... [2023-04-02 06:42:56,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:42:56,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:42:56,605 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 06:42:56,655 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 06:42:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:42:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:42:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:42:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:42:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:42:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:42:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:42:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:42:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:42:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:42:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:42:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:42:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:42:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:42:56,881 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:42:56,883 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:42:57,525 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:42:57,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:42:57,536 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:42:57,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:42:57 BoogieIcfgContainer [2023-04-02 06:42:57,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:42:57,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:42:57,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:42:57,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:42:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:42:56" (1/3) ... [2023-04-02 06:42:57,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e11d425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:42:57, skipping insertion in model container [2023-04-02 06:42:57,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:56" (2/3) ... [2023-04-02 06:42:57,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e11d425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:42:57, skipping insertion in model container [2023-04-02 06:42:57,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:42:57" (3/3) ... [2023-04-02 06:42:57,547 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2023-04-02 06:42:57,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:42:57,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:42:57,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:42:57,625 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;@6d404278, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:42:57,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:42:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 208 states, 201 states have (on average 1.7611940298507462) internal successors, (354), 203 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:42:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 06:42:57,640 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:57,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:57,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:57,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash 886367248, now seen corresponding path program 1 times [2023-04-02 06:42:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287999015] [2023-04-02 06:42:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:58,820 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 06:42:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:58,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287999015] [2023-04-02 06:42:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287999015] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:58,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:58,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:42:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375449599] [2023-04-02 06:42:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:58,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:42:58,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:42:58,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:42:58,878 INFO L87 Difference]: Start difference. First operand has 208 states, 201 states have (on average 1.7611940298507462) internal successors, (354), 203 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:01,449 INFO L93 Difference]: Finished difference Result 1493 states and 2361 transitions. [2023-04-02 06:43:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:43:01,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2023-04-02 06:43:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:01,470 INFO L225 Difference]: With dead ends: 1493 [2023-04-02 06:43:01,470 INFO L226 Difference]: Without dead ends: 1323 [2023-04-02 06:43:01,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:43:01,477 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 2988 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:01,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2988 Valid, 4545 Invalid, 1212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:43:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2023-04-02 06:43:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 306. [2023-04-02 06:43:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.4337748344370862) internal successors, (433), 302 states have internal predecessors, (433), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 436 transitions. [2023-04-02 06:43:01,586 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 436 transitions. Word has length 112 [2023-04-02 06:43:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:01,587 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 436 transitions. [2023-04-02 06:43:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 436 transitions. [2023-04-02 06:43:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:01,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:01,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:01,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:43:01,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:01,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash 3933887, now seen corresponding path program 1 times [2023-04-02 06:43:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:01,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381648432] [2023-04-02 06:43:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:02,086 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 06:43:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381648432] [2023-04-02 06:43:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381648432] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:02,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:02,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896487329] [2023-04-02 06:43:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:02,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:02,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:02,091 INFO L87 Difference]: Start difference. First operand 306 states and 436 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:03,993 INFO L93 Difference]: Finished difference Result 1547 states and 2381 transitions. [2023-04-02 06:43:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:03,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:04,000 INFO L225 Difference]: With dead ends: 1547 [2023-04-02 06:43:04,000 INFO L226 Difference]: Without dead ends: 1389 [2023-04-02 06:43:04,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:04,003 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 2084 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:04,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 2617 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:43:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2023-04-02 06:43:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 384. [2023-04-02 06:43:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.4631578947368422) internal successors, (556), 380 states have internal predecessors, (556), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 559 transitions. [2023-04-02 06:43:04,057 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 559 transitions. Word has length 114 [2023-04-02 06:43:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:04,058 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 559 transitions. [2023-04-02 06:43:04,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 559 transitions. [2023-04-02 06:43:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:04,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:04,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:04,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:43:04,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:04,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash -395519198, now seen corresponding path program 1 times [2023-04-02 06:43:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325058456] [2023-04-02 06:43:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:04,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:04,532 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 06:43:04,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:04,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325058456] [2023-04-02 06:43:04,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325058456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:04,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:04,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:04,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99581665] [2023-04-02 06:43:04,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:04,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:04,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:04,537 INFO L87 Difference]: Start difference. First operand 384 states and 559 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:06,271 INFO L93 Difference]: Finished difference Result 1641 states and 2529 transitions. [2023-04-02 06:43:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:06,279 INFO L225 Difference]: With dead ends: 1641 [2023-04-02 06:43:06,280 INFO L226 Difference]: Without dead ends: 1483 [2023-04-02 06:43:06,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:06,282 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 2383 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:06,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 2425 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:43:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-04-02 06:43:06,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 567. [2023-04-02 06:43:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 563 states have (on average 1.4991119005328597) internal successors, (844), 563 states have internal predecessors, (844), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 847 transitions. [2023-04-02 06:43:06,373 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 847 transitions. Word has length 114 [2023-04-02 06:43:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:06,373 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 847 transitions. [2023-04-02 06:43:06,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 847 transitions. [2023-04-02 06:43:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:06,375 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:06,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:43:06,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:06,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1635596179, now seen corresponding path program 1 times [2023-04-02 06:43:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:06,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206218931] [2023-04-02 06:43:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:06,845 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 06:43:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206218931] [2023-04-02 06:43:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206218931] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:06,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:06,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931859413] [2023-04-02 06:43:06,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:06,848 INFO L87 Difference]: Start difference. First operand 567 states and 847 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:08,199 INFO L93 Difference]: Finished difference Result 1720 states and 2653 transitions. [2023-04-02 06:43:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:08,215 INFO L225 Difference]: With dead ends: 1720 [2023-04-02 06:43:08,215 INFO L226 Difference]: Without dead ends: 1562 [2023-04-02 06:43:08,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:08,225 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2503 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:08,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 2101 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:43:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2023-04-02 06:43:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 646. [2023-04-02 06:43:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 642 states have (on average 1.5077881619937694) internal successors, (968), 642 states have internal predecessors, (968), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 971 transitions. [2023-04-02 06:43:08,331 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 971 transitions. Word has length 114 [2023-04-02 06:43:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 971 transitions. [2023-04-02 06:43:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 971 transitions. [2023-04-02 06:43:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:08,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:08,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:08,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:43:08,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:08,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -982107047, now seen corresponding path program 1 times [2023-04-02 06:43:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742956633] [2023-04-02 06:43:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:08,783 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 06:43:08,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742956633] [2023-04-02 06:43:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742956633] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:08,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968637418] [2023-04-02 06:43:08,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:08,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:08,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:08,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:08,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:08,793 INFO L87 Difference]: Start difference. First operand 646 states and 971 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:10,054 INFO L93 Difference]: Finished difference Result 1798 states and 2776 transitions. [2023-04-02 06:43:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:10,063 INFO L225 Difference]: With dead ends: 1798 [2023-04-02 06:43:10,063 INFO L226 Difference]: Without dead ends: 1640 [2023-04-02 06:43:10,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:10,066 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2598 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:10,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2598 Valid, 2207 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:43:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-04-02 06:43:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 724. [2023-04-02 06:43:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 720 states have (on average 1.5152777777777777) internal successors, (1091), 720 states have internal predecessors, (1091), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1094 transitions. [2023-04-02 06:43:10,188 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1094 transitions. Word has length 114 [2023-04-02 06:43:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:10,188 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1094 transitions. [2023-04-02 06:43:10,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1094 transitions. [2023-04-02 06:43:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:10,189 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:10,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:43:10,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:10,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1603563438, now seen corresponding path program 1 times [2023-04-02 06:43:10,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:10,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863321433] [2023-04-02 06:43:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:10,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:10,868 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 06:43:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863321433] [2023-04-02 06:43:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863321433] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:10,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:10,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788758184] [2023-04-02 06:43:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:10,870 INFO L87 Difference]: Start difference. First operand 724 states and 1094 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:11,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:11,904 INFO L93 Difference]: Finished difference Result 1586 states and 2450 transitions. [2023-04-02 06:43:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:11,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:11,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:11,908 INFO L225 Difference]: With dead ends: 1586 [2023-04-02 06:43:11,908 INFO L226 Difference]: Without dead ends: 1038 [2023-04-02 06:43:11,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:43:11,910 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 358 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:11,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1230 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:43:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-04-02 06:43:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2023-04-02 06:43:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1032 states have (on average 1.5281007751937985) internal successors, (1577), 1032 states have internal predecessors, (1577), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1580 transitions. [2023-04-02 06:43:12,105 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1580 transitions. Word has length 114 [2023-04-02 06:43:12,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:12,106 INFO L495 AbstractCegarLoop]: Abstraction has 1036 states and 1580 transitions. [2023-04-02 06:43:12,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1580 transitions. [2023-04-02 06:43:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:12,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:12,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:12,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:43:12,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:12,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1844781165, now seen corresponding path program 1 times [2023-04-02 06:43:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:12,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897068096] [2023-04-02 06:43:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:12,372 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 06:43:12,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:12,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897068096] [2023-04-02 06:43:12,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897068096] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:12,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:12,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:43:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467725610] [2023-04-02 06:43:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:12,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:43:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:43:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:43:12,374 INFO L87 Difference]: Start difference. First operand 1036 states and 1580 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:12,973 INFO L93 Difference]: Finished difference Result 1902 states and 2935 transitions. [2023-04-02 06:43:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:43:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:12,977 INFO L225 Difference]: With dead ends: 1902 [2023-04-02 06:43:12,977 INFO L226 Difference]: Without dead ends: 1031 [2023-04-02 06:43:12,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:43:12,979 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:12,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 534 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:43:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-04-02 06:43:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2023-04-02 06:43:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1027 states have (on average 1.5199610516066213) internal successors, (1561), 1027 states have internal predecessors, (1561), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1564 transitions. [2023-04-02 06:43:13,146 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1564 transitions. Word has length 114 [2023-04-02 06:43:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:13,146 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1564 transitions. [2023-04-02 06:43:13,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1564 transitions. [2023-04-02 06:43:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:13,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:13,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:13,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:43:13,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:13,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 291790761, now seen corresponding path program 1 times [2023-04-02 06:43:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944663824] [2023-04-02 06:43:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:13,563 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 06:43:13,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944663824] [2023-04-02 06:43:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944663824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906261219] [2023-04-02 06:43:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:13,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:13,566 INFO L87 Difference]: Start difference. First operand 1031 states and 1564 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:15,030 INFO L93 Difference]: Finished difference Result 2182 states and 3350 transitions. [2023-04-02 06:43:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:15,037 INFO L225 Difference]: With dead ends: 2182 [2023-04-02 06:43:15,037 INFO L226 Difference]: Without dead ends: 2025 [2023-04-02 06:43:15,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:15,039 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2093 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:15,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 2747 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:43:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2023-04-02 06:43:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1197. [2023-04-02 06:43:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1193 states have (on average 1.5255658005029338) internal successors, (1820), 1193 states have internal predecessors, (1820), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1823 transitions. [2023-04-02 06:43:15,256 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1823 transitions. Word has length 114 [2023-04-02 06:43:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:15,257 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1823 transitions. [2023-04-02 06:43:15,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1823 transitions. [2023-04-02 06:43:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:15,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:15,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:15,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:43:15,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:15,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1294899084, now seen corresponding path program 1 times [2023-04-02 06:43:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449431557] [2023-04-02 06:43:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:15,675 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 06:43:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449431557] [2023-04-02 06:43:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449431557] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:15,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869530463] [2023-04-02 06:43:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:15,681 INFO L87 Difference]: Start difference. First operand 1197 states and 1823 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:17,029 INFO L93 Difference]: Finished difference Result 2348 states and 3609 transitions. [2023-04-02 06:43:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:17,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:17,036 INFO L225 Difference]: With dead ends: 2348 [2023-04-02 06:43:17,036 INFO L226 Difference]: Without dead ends: 2191 [2023-04-02 06:43:17,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:17,037 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2288 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:17,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 3097 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:43:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2023-04-02 06:43:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1368. [2023-04-02 06:43:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1364 states have (on average 1.530058651026393) internal successors, (2087), 1364 states have internal predecessors, (2087), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2090 transitions. [2023-04-02 06:43:17,320 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2090 transitions. Word has length 114 [2023-04-02 06:43:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:17,321 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 2090 transitions. [2023-04-02 06:43:17,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2090 transitions. [2023-04-02 06:43:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 06:43:17,322 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:17,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:17,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:43:17,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:17,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -170965770, now seen corresponding path program 1 times [2023-04-02 06:43:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25076980] [2023-04-02 06:43:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:17,717 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 06:43:17,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25076980] [2023-04-02 06:43:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25076980] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:17,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:17,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723383547] [2023-04-02 06:43:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:17,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:17,723 INFO L87 Difference]: Start difference. First operand 1368 states and 2090 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:19,194 INFO L93 Difference]: Finished difference Result 2524 states and 3884 transitions. [2023-04-02 06:43:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-02 06:43:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:19,203 INFO L225 Difference]: With dead ends: 2524 [2023-04-02 06:43:19,203 INFO L226 Difference]: Without dead ends: 2367 [2023-04-02 06:43:19,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:19,205 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 2560 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:19,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2560 Valid, 2679 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:43:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-04-02 06:43:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1544. [2023-04-02 06:43:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.5337662337662337) internal successors, (2362), 1540 states have internal predecessors, (2362), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2365 transitions. [2023-04-02 06:43:19,502 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2365 transitions. Word has length 114 [2023-04-02 06:43:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2365 transitions. [2023-04-02 06:43:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2365 transitions. [2023-04-02 06:43:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 06:43:19,504 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:19,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:19,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:43:19,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:19,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1827231795, now seen corresponding path program 1 times [2023-04-02 06:43:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636489623] [2023-04-02 06:43:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:19,854 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 06:43:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636489623] [2023-04-02 06:43:19,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636489623] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:19,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:19,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:19,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511579809] [2023-04-02 06:43:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:19,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:19,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:19,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:19,856 INFO L87 Difference]: Start difference. First operand 1544 states and 2365 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:20,751 INFO L93 Difference]: Finished difference Result 3007 states and 4643 transitions. [2023-04-02 06:43:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-02 06:43:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:20,758 INFO L225 Difference]: With dead ends: 3007 [2023-04-02 06:43:20,758 INFO L226 Difference]: Without dead ends: 1544 [2023-04-02 06:43:20,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:43:20,761 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 677 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:20,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 191 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:43:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-02 06:43:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2023-04-02 06:43:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.5220779220779221) internal successors, (2344), 1540 states have internal predecessors, (2344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2347 transitions. [2023-04-02 06:43:21,140 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2347 transitions. Word has length 115 [2023-04-02 06:43:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:21,140 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2347 transitions. [2023-04-02 06:43:21,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2347 transitions. [2023-04-02 06:43:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:43:21,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:21,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:43:21,142 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:21,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1618888572, now seen corresponding path program 1 times [2023-04-02 06:43:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077639603] [2023-04-02 06:43:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:21,481 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 06:43:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:21,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077639603] [2023-04-02 06:43:21,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077639603] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:21,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:21,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:21,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004024610] [2023-04-02 06:43:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:21,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:21,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:21,483 INFO L87 Difference]: Start difference. First operand 1544 states and 2347 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:22,546 INFO L93 Difference]: Finished difference Result 3023 states and 4627 transitions. [2023-04-02 06:43:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:22,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2023-04-02 06:43:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:22,550 INFO L225 Difference]: With dead ends: 3023 [2023-04-02 06:43:22,550 INFO L226 Difference]: Without dead ends: 1544 [2023-04-02 06:43:22,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:43:22,553 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 715 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:22,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 159 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:43:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-02 06:43:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2023-04-02 06:43:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.5103896103896104) internal successors, (2326), 1540 states have internal predecessors, (2326), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2329 transitions. [2023-04-02 06:43:22,862 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2329 transitions. Word has length 116 [2023-04-02 06:43:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:22,863 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2329 transitions. [2023-04-02 06:43:22,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2329 transitions. [2023-04-02 06:43:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 06:43:22,864 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:22,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:22,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:43:22,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:22,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1212517907, now seen corresponding path program 1 times [2023-04-02 06:43:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:22,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335404031] [2023-04-02 06:43:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:22,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:23,198 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 06:43:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335404031] [2023-04-02 06:43:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335404031] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:23,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:23,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482939176] [2023-04-02 06:43:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:23,200 INFO L87 Difference]: Start difference. First operand 1544 states and 2329 transitions. Second operand has 6 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:24,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:24,166 INFO L93 Difference]: Finished difference Result 3019 states and 4587 transitions. [2023-04-02 06:43:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:24,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2023-04-02 06:43:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:24,171 INFO L225 Difference]: With dead ends: 3019 [2023-04-02 06:43:24,171 INFO L226 Difference]: Without dead ends: 1544 [2023-04-02 06:43:24,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:43:24,174 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 697 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:24,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 167 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:43:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-02 06:43:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2023-04-02 06:43:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.4987012987012986) internal successors, (2308), 1540 states have internal predecessors, (2308), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2311 transitions. [2023-04-02 06:43:24,512 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2311 transitions. Word has length 117 [2023-04-02 06:43:24,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:24,512 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2311 transitions. [2023-04-02 06:43:24,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2311 transitions. [2023-04-02 06:43:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-02 06:43:24,515 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:24,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:24,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:43:24,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:24,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash 957869781, now seen corresponding path program 1 times [2023-04-02 06:43:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968760212] [2023-04-02 06:43:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:24,865 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 06:43:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968760212] [2023-04-02 06:43:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968760212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585981790] [2023-04-02 06:43:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:24,867 INFO L87 Difference]: Start difference. First operand 1544 states and 2311 transitions. Second operand has 6 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:25,789 INFO L93 Difference]: Finished difference Result 3003 states and 4533 transitions. [2023-04-02 06:43:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2023-04-02 06:43:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:25,793 INFO L225 Difference]: With dead ends: 3003 [2023-04-02 06:43:25,793 INFO L226 Difference]: Without dead ends: 1544 [2023-04-02 06:43:25,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:43:25,795 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 646 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:25,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 203 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:43:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-02 06:43:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2023-04-02 06:43:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.4870129870129871) internal successors, (2290), 1540 states have internal predecessors, (2290), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2293 transitions. [2023-04-02 06:43:26,119 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2293 transitions. Word has length 118 [2023-04-02 06:43:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:26,120 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2293 transitions. [2023-04-02 06:43:26,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2293 transitions. [2023-04-02 06:43:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-02 06:43:26,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:26,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:26,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:43:26,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:26,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1099214831, now seen corresponding path program 1 times [2023-04-02 06:43:26,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:26,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165615166] [2023-04-02 06:43:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:26,406 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 06:43:26,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165615166] [2023-04-02 06:43:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165615166] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:26,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183674520] [2023-04-02 06:43:26,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:26,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:26,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:26,408 INFO L87 Difference]: Start difference. First operand 1544 states and 2293 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:27,379 INFO L93 Difference]: Finished difference Result 3015 states and 4511 transitions. [2023-04-02 06:43:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2023-04-02 06:43:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:27,383 INFO L225 Difference]: With dead ends: 3015 [2023-04-02 06:43:27,383 INFO L226 Difference]: Without dead ends: 1544 [2023-04-02 06:43:27,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:43:27,385 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 673 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:27,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 175 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:43:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-02 06:43:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2023-04-02 06:43:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.4753246753246754) internal successors, (2272), 1540 states have internal predecessors, (2272), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2275 transitions. [2023-04-02 06:43:27,765 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2275 transitions. Word has length 119 [2023-04-02 06:43:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:27,765 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2275 transitions. [2023-04-02 06:43:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2275 transitions. [2023-04-02 06:43:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 06:43:27,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:27,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:27,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:43:27,767 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:27,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash 20714628, now seen corresponding path program 1 times [2023-04-02 06:43:27,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:27,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856791530] [2023-04-02 06:43:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:27,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:28,081 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 06:43:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856791530] [2023-04-02 06:43:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856791530] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:28,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:28,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855459784] [2023-04-02 06:43:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:28,085 INFO L87 Difference]: Start difference. First operand 1544 states and 2275 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:29,053 INFO L93 Difference]: Finished difference Result 3011 states and 4471 transitions. [2023-04-02 06:43:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2023-04-02 06:43:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:29,058 INFO L225 Difference]: With dead ends: 3011 [2023-04-02 06:43:29,058 INFO L226 Difference]: Without dead ends: 1544 [2023-04-02 06:43:29,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:43:29,061 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 655 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:29,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 183 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:43:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-02 06:43:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2023-04-02 06:43:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1540 states have (on average 1.4636363636363636) internal successors, (2254), 1540 states have internal predecessors, (2254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2257 transitions. [2023-04-02 06:43:29,415 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2257 transitions. Word has length 120 [2023-04-02 06:43:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:29,416 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2257 transitions. [2023-04-02 06:43:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2257 transitions. [2023-04-02 06:43:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:43:29,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:29,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:29,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:43:29,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:29,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 591575136, now seen corresponding path program 1 times [2023-04-02 06:43:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029089525] [2023-04-02 06:43:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:29,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:29,753 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 06:43:29,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029089525] [2023-04-02 06:43:29,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029089525] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:29,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:29,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:29,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345078797] [2023-04-02 06:43:29,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:29,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:29,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:29,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:29,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:29,756 INFO L87 Difference]: Start difference. First operand 1544 states and 2257 transitions. Second operand has 6 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:31,055 INFO L93 Difference]: Finished difference Result 4444 states and 6560 transitions. [2023-04-02 06:43:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-02 06:43:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:31,062 INFO L225 Difference]: With dead ends: 4444 [2023-04-02 06:43:31,062 INFO L226 Difference]: Without dead ends: 2961 [2023-04-02 06:43:31,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:43:31,064 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1012 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:31,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 235 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:43:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-04-02 06:43:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2959. [2023-04-02 06:43:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4697123519458546) internal successors, (4343), 2955 states have internal predecessors, (4343), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4346 transitions. [2023-04-02 06:43:31,725 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4346 transitions. Word has length 121 [2023-04-02 06:43:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:31,725 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4346 transitions. [2023-04-02 06:43:31,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4346 transitions. [2023-04-02 06:43:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:43:31,726 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:31,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:43:31,727 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:31,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1403862976, now seen corresponding path program 1 times [2023-04-02 06:43:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969177442] [2023-04-02 06:43:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:32,234 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 06:43:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:32,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969177442] [2023-04-02 06:43:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969177442] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:43:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657395560] [2023-04-02 06:43:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:32,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:32,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:32,237 INFO L87 Difference]: Start difference. First operand 2959 states and 4346 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:33,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:33,710 INFO L93 Difference]: Finished difference Result 3675 states and 5359 transitions. [2023-04-02 06:43:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2023-04-02 06:43:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:33,718 INFO L225 Difference]: With dead ends: 3675 [2023-04-02 06:43:33,718 INFO L226 Difference]: Without dead ends: 3673 [2023-04-02 06:43:33,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:43:33,720 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 224 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:33,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1052 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:43:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2023-04-02 06:43:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 2959. [2023-04-02 06:43:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4636209813874788) internal successors, (4325), 2955 states have internal predecessors, (4325), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4328 transitions. [2023-04-02 06:43:34,496 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4328 transitions. Word has length 122 [2023-04-02 06:43:34,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:34,497 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4328 transitions. [2023-04-02 06:43:34,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4328 transitions. [2023-04-02 06:43:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:43:34,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:34,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:34,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:43:34,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:34,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash 609855396, now seen corresponding path program 1 times [2023-04-02 06:43:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:34,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906771269] [2023-04-02 06:43:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:35,270 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 06:43:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:35,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906771269] [2023-04-02 06:43:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906771269] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:43:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107226185] [2023-04-02 06:43:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:43:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:43:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:43:35,272 INFO L87 Difference]: Start difference. First operand 2959 states and 4328 transitions. Second operand has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:38,220 INFO L93 Difference]: Finished difference Result 8384 states and 12266 transitions. [2023-04-02 06:43:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:43:38,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-02 06:43:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:38,234 INFO L225 Difference]: With dead ends: 8384 [2023-04-02 06:43:38,234 INFO L226 Difference]: Without dead ends: 5733 [2023-04-02 06:43:38,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:43:38,237 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1687 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:38,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 680 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:43:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2023-04-02 06:43:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 2959. [2023-04-02 06:43:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4592216582064297) internal successors, (4312), 2955 states have internal predecessors, (4312), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4315 transitions. [2023-04-02 06:43:39,117 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4315 transitions. Word has length 123 [2023-04-02 06:43:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:39,117 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4315 transitions. [2023-04-02 06:43:39,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4315 transitions. [2023-04-02 06:43:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:43:39,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:39,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:43:39,119 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:39,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1653996523, now seen corresponding path program 1 times [2023-04-02 06:43:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:39,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887532721] [2023-04-02 06:43:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:39,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:39,717 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 06:43:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887532721] [2023-04-02 06:43:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887532721] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:39,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:39,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:43:39,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673676722] [2023-04-02 06:43:39,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:39,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:39,719 INFO L87 Difference]: Start difference. First operand 2959 states and 4315 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:42,722 INFO L93 Difference]: Finished difference Result 8332 states and 12216 transitions. [2023-04-02 06:43:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:43:42,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-02 06:43:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:42,733 INFO L225 Difference]: With dead ends: 8332 [2023-04-02 06:43:42,733 INFO L226 Difference]: Without dead ends: 5597 [2023-04-02 06:43:42,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:43:42,739 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1849 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:42,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 459 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:43:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2023-04-02 06:43:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 2959. [2023-04-02 06:43:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4588832487309644) internal successors, (4311), 2955 states have internal predecessors, (4311), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4314 transitions. [2023-04-02 06:43:43,664 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4314 transitions. Word has length 123 [2023-04-02 06:43:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:43,664 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4314 transitions. [2023-04-02 06:43:43,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4314 transitions. [2023-04-02 06:43:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:43:43,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:43,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:43:43,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:43,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2066124940, now seen corresponding path program 1 times [2023-04-02 06:43:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707717516] [2023-04-02 06:43:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:44,358 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 06:43:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707717516] [2023-04-02 06:43:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707717516] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:44,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:43:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656400414] [2023-04-02 06:43:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:44,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:43:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:43:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:43:44,361 INFO L87 Difference]: Start difference. First operand 2959 states and 4314 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:50,388 INFO L93 Difference]: Finished difference Result 14321 states and 20842 transitions. [2023-04-02 06:43:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:43:50,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-02 06:43:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:50,411 INFO L225 Difference]: With dead ends: 14321 [2023-04-02 06:43:50,411 INFO L226 Difference]: Without dead ends: 11597 [2023-04-02 06:43:50,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:43:50,419 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1563 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:50,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1325 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:43:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11597 states. [2023-04-02 06:43:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11597 to 2992. [2023-04-02 06:43:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2988 states have (on average 1.4568273092369477) internal successors, (4353), 2988 states have internal predecessors, (4353), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4356 transitions. [2023-04-02 06:43:51,659 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4356 transitions. Word has length 123 [2023-04-02 06:43:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:51,660 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 4356 transitions. [2023-04-02 06:43:51,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4356 transitions. [2023-04-02 06:43:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 06:43:51,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:51,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:51,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:43:51,661 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:51,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash 996328406, now seen corresponding path program 1 times [2023-04-02 06:43:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212967618] [2023-04-02 06:43:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:52,227 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 06:43:52,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212967618] [2023-04-02 06:43:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212967618] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:52,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959439984] [2023-04-02 06:43:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:52,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:43:52,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:52,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:43:52,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:43:52,229 INFO L87 Difference]: Start difference. First operand 2992 states and 4356 transitions. Second operand has 11 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:55,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:55,690 INFO L93 Difference]: Finished difference Result 8646 states and 12633 transitions. [2023-04-02 06:43:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:43:55,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2023-04-02 06:43:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:55,701 INFO L225 Difference]: With dead ends: 8646 [2023-04-02 06:43:55,701 INFO L226 Difference]: Without dead ends: 5856 [2023-04-02 06:43:55,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:43:55,706 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1929 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:55,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 571 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:43:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5856 states. [2023-04-02 06:43:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5856 to 2992. [2023-04-02 06:43:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2988 states have (on average 1.4538152610441768) internal successors, (4344), 2988 states have internal predecessors, (4344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4347 transitions. [2023-04-02 06:43:57,338 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4347 transitions. Word has length 124 [2023-04-02 06:43:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:57,338 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 4347 transitions. [2023-04-02 06:43:57,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4347 transitions. [2023-04-02 06:43:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 06:43:57,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:57,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:57,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:43:57,340 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:57,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash 314459246, now seen corresponding path program 1 times [2023-04-02 06:43:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198477251] [2023-04-02 06:43:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:57,843 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 06:43:57,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:57,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198477251] [2023-04-02 06:43:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198477251] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:57,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:57,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122567512] [2023-04-02 06:43:57,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:57,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:43:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:43:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:43:57,846 INFO L87 Difference]: Start difference. First operand 2992 states and 4347 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:01,318 INFO L93 Difference]: Finished difference Result 8601 states and 12552 transitions. [2023-04-02 06:44:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:44:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2023-04-02 06:44:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:01,344 INFO L225 Difference]: With dead ends: 8601 [2023-04-02 06:44:01,344 INFO L226 Difference]: Without dead ends: 5850 [2023-04-02 06:44:01,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:44:01,349 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1098 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:01,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 724 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:44:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2023-04-02 06:44:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 2959. [2023-04-02 06:44:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4538071065989848) internal successors, (4296), 2955 states have internal predecessors, (4296), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4299 transitions. [2023-04-02 06:44:02,555 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4299 transitions. Word has length 125 [2023-04-02 06:44:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:02,555 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4299 transitions. [2023-04-02 06:44:02,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4299 transitions. [2023-04-02 06:44:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 06:44:02,557 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:02,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:44:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:44:02,557 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:02,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash -267560766, now seen corresponding path program 1 times [2023-04-02 06:44:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121226808] [2023-04-02 06:44:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:03,203 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 06:44:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121226808] [2023-04-02 06:44:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121226808] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:03,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:03,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:44:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150941984] [2023-04-02 06:44:03,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:03,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:44:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:44:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:44:03,205 INFO L87 Difference]: Start difference. First operand 2959 states and 4299 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:10,801 INFO L93 Difference]: Finished difference Result 14234 states and 20674 transitions. [2023-04-02 06:44:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:44:10,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2023-04-02 06:44:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:10,816 INFO L225 Difference]: With dead ends: 14234 [2023-04-02 06:44:10,816 INFO L226 Difference]: Without dead ends: 11540 [2023-04-02 06:44:10,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:44:10,820 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1294 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:10,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1897 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:44:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2023-04-02 06:44:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 3031. [2023-04-02 06:44:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3027 states have (on average 1.4489593657086224) internal successors, (4386), 3027 states have internal predecessors, (4386), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4389 transitions. [2023-04-02 06:44:12,175 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4389 transitions. Word has length 125 [2023-04-02 06:44:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:12,175 INFO L495 AbstractCegarLoop]: Abstraction has 3031 states and 4389 transitions. [2023-04-02 06:44:12,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 13 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4389 transitions. [2023-04-02 06:44:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 06:44:12,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:12,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:44:12,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:44:12,178 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:12,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:12,178 INFO L85 PathProgramCache]: Analyzing trace with hash -110656352, now seen corresponding path program 1 times [2023-04-02 06:44:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:12,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662796097] [2023-04-02 06:44:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:12,650 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 06:44:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662796097] [2023-04-02 06:44:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662796097] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:44:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064159872] [2023-04-02 06:44:12,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:12,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:44:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:12,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:44:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:44:12,652 INFO L87 Difference]: Start difference. First operand 3031 states and 4389 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:16,331 INFO L93 Difference]: Finished difference Result 8574 states and 12483 transitions. [2023-04-02 06:44:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:44:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-02 06:44:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:16,338 INFO L225 Difference]: With dead ends: 8574 [2023-04-02 06:44:16,338 INFO L226 Difference]: Without dead ends: 5868 [2023-04-02 06:44:16,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:44:16,344 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1021 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:16,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 716 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:44:16,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2023-04-02 06:44:17,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 2959. [2023-04-02 06:44:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4500846023688663) internal successors, (4285), 2955 states have internal predecessors, (4285), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4288 transitions. [2023-04-02 06:44:17,865 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4288 transitions. Word has length 126 [2023-04-02 06:44:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:17,865 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4288 transitions. [2023-04-02 06:44:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4288 transitions. [2023-04-02 06:44:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 06:44:17,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:17,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:44:17,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:44:17,867 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:17,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2126595491, now seen corresponding path program 1 times [2023-04-02 06:44:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:17,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373279263] [2023-04-02 06:44:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:18,373 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 06:44:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373279263] [2023-04-02 06:44:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373279263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:18,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:44:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422053717] [2023-04-02 06:44:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:44:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:44:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:44:18,375 INFO L87 Difference]: Start difference. First operand 2959 states and 4288 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:21,033 INFO L93 Difference]: Finished difference Result 6138 states and 8915 transitions. [2023-04-02 06:44:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:44:21,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-02 06:44:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:21,038 INFO L225 Difference]: With dead ends: 6138 [2023-04-02 06:44:21,039 INFO L226 Difference]: Without dead ends: 3342 [2023-04-02 06:44:21,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:44:21,043 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1861 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:21,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 587 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:44:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2023-04-02 06:44:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2959. [2023-04-02 06:44:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2955 states have (on average 1.4490693739424705) internal successors, (4282), 2955 states have internal predecessors, (4282), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4285 transitions. [2023-04-02 06:44:22,714 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4285 transitions. Word has length 126 [2023-04-02 06:44:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:22,714 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4285 transitions. [2023-04-02 06:44:22,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4285 transitions. [2023-04-02 06:44:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-02 06:44:22,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:22,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:44:22,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:44:22,728 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:22,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:22,729 INFO L85 PathProgramCache]: Analyzing trace with hash 922301348, now seen corresponding path program 1 times [2023-04-02 06:44:22,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:22,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557533503] [2023-04-02 06:44:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:23,688 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 06:44:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557533503] [2023-04-02 06:44:23,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557533503] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:23,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:23,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:44:23,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028185583] [2023-04-02 06:44:23,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:23,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:44:23,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:44:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:44:23,690 INFO L87 Difference]: Start difference. First operand 2959 states and 4285 transitions. Second operand has 14 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:52,276 INFO L93 Difference]: Finished difference Result 45545 states and 65836 transitions. [2023-04-02 06:44:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 06:44:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-02 06:44:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:52,356 INFO L225 Difference]: With dead ends: 45545 [2023-04-02 06:44:52,356 INFO L226 Difference]: Without dead ends: 42907 [2023-04-02 06:44:52,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 06:44:52,376 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 3437 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:52,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3437 Valid, 1842 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 06:44:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42907 states. [2023-04-02 06:44:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42907 to 3017. [2023-04-02 06:44:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3013 states have (on average 1.4454032525721872) internal successors, (4355), 3013 states have internal predecessors, (4355), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4358 transitions. [2023-04-02 06:44:54,637 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4358 transitions. Word has length 127 [2023-04-02 06:44:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:54,637 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 4358 transitions. [2023-04-02 06:44:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4358 transitions. [2023-04-02 06:44:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:44:54,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:54,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:44:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:44:54,644 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:54,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:54,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1530940429, now seen corresponding path program 1 times [2023-04-02 06:44:54,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:54,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392415289] [2023-04-02 06:44:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:54,944 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 06:44:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392415289] [2023-04-02 06:44:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392415289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981420659] [2023-04-02 06:44:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:54,945 INFO L87 Difference]: Start difference. First operand 3017 states and 4358 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:59,295 INFO L93 Difference]: Finished difference Result 8157 states and 11944 transitions. [2023-04-02 06:44:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:44:59,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-02 06:44:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:59,302 INFO L225 Difference]: With dead ends: 8157 [2023-04-02 06:44:59,302 INFO L226 Difference]: Without dead ends: 5519 [2023-04-02 06:44:59,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:59,305 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 126 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:59,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 549 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:44:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2023-04-02 06:45:03,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5381. [2023-04-02 06:45:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 5377 states have (on average 1.445973591221871) internal successors, (7775), 5377 states have internal predecessors, (7775), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 7778 transitions. [2023-04-02 06:45:03,059 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 7778 transitions. Word has length 128 [2023-04-02 06:45:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:03,059 INFO L495 AbstractCegarLoop]: Abstraction has 5381 states and 7778 transitions. [2023-04-02 06:45:03,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 7778 transitions. [2023-04-02 06:45:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:45:03,061 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:03,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:45:03,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:03,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1095062605, now seen corresponding path program 1 times [2023-04-02 06:45:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651705376] [2023-04-02 06:45:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:03,893 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 06:45:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651705376] [2023-04-02 06:45:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651705376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:03,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:03,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:45:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972372825] [2023-04-02 06:45:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:45:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:45:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:45:03,895 INFO L87 Difference]: Start difference. First operand 5381 states and 7778 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:13,962 INFO L93 Difference]: Finished difference Result 13014 states and 18883 transitions. [2023-04-02 06:45:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:45:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-02 06:45:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:13,974 INFO L225 Difference]: With dead ends: 13014 [2023-04-02 06:45:13,974 INFO L226 Difference]: Without dead ends: 11741 [2023-04-02 06:45:13,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:45:13,977 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 2102 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:13,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 2607 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:45:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11741 states. [2023-04-02 06:45:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11741 to 5321. [2023-04-02 06:45:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5317 states have (on average 1.4466804589053979) internal successors, (7692), 5317 states have internal predecessors, (7692), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 7695 transitions. [2023-04-02 06:45:17,577 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 7695 transitions. Word has length 128 [2023-04-02 06:45:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:17,577 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 7695 transitions. [2023-04-02 06:45:17,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 7695 transitions. [2023-04-02 06:45:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:45:17,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:17,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:45:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:45:17,579 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:17,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1965703350, now seen corresponding path program 1 times [2023-04-02 06:45:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:17,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294781081] [2023-04-02 06:45:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:17,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:18,294 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 06:45:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294781081] [2023-04-02 06:45:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294781081] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:18,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:45:18,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340600143] [2023-04-02 06:45:18,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:18,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:45:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:45:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:45:18,296 INFO L87 Difference]: Start difference. First operand 5321 states and 7695 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 11 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:34,915 INFO L93 Difference]: Finished difference Result 21520 states and 31378 transitions. [2023-04-02 06:45:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:45:34,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 11 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-02 06:45:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:34,941 INFO L225 Difference]: With dead ends: 21520 [2023-04-02 06:45:34,941 INFO L226 Difference]: Without dead ends: 20292 [2023-04-02 06:45:34,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:45:34,946 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1960 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:34,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 1345 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:45:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20292 states. [2023-04-02 06:45:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20292 to 5286. [2023-04-02 06:45:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5282 states have (on average 1.4473684210526316) internal successors, (7645), 5282 states have internal predecessors, (7645), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 7648 transitions. [2023-04-02 06:45:39,048 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 7648 transitions. Word has length 128 [2023-04-02 06:45:39,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:39,049 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 7648 transitions. [2023-04-02 06:45:39,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 11 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 7648 transitions. [2023-04-02 06:45:39,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:45:39,049 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:39,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:45:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:45:39,050 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:39,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash -763000874, now seen corresponding path program 1 times [2023-04-02 06:45:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:39,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295571542] [2023-04-02 06:45:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:39,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:39,850 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 06:45:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295571542] [2023-04-02 06:45:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295571542] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:45:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166297024] [2023-04-02 06:45:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:45:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:45:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:45:39,852 INFO L87 Difference]: Start difference. First operand 5286 states and 7648 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:59,325 INFO L93 Difference]: Finished difference Result 21710 states and 31596 transitions. [2023-04-02 06:45:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:45:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-02 06:45:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:59,347 INFO L225 Difference]: With dead ends: 21710 [2023-04-02 06:45:59,347 INFO L226 Difference]: Without dead ends: 20492 [2023-04-02 06:45:59,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:45:59,351 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1479 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:59,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 3044 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:45:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20492 states. [2023-04-02 06:46:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20492 to 5266. [2023-04-02 06:46:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5262 states have (on average 1.4467882934245535) internal successors, (7613), 5262 states have internal predecessors, (7613), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 7616 transitions. [2023-04-02 06:46:03,848 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 7616 transitions. Word has length 128 [2023-04-02 06:46:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:03,848 INFO L495 AbstractCegarLoop]: Abstraction has 5266 states and 7616 transitions. [2023-04-02 06:46:03,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 7616 transitions. [2023-04-02 06:46:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:46:03,849 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:03,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:46:03,849 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:03,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2042589195, now seen corresponding path program 1 times [2023-04-02 06:46:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:03,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280328713] [2023-04-02 06:46:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:04,590 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 06:46:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280328713] [2023-04-02 06:46:04,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280328713] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:04,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:04,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:46:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644553340] [2023-04-02 06:46:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:04,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:46:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:46:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:46:04,592 INFO L87 Difference]: Start difference. First operand 5266 states and 7616 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:25,564 INFO L93 Difference]: Finished difference Result 21538 states and 31384 transitions. [2023-04-02 06:46:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:46:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-04-02 06:46:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:25,586 INFO L225 Difference]: With dead ends: 21538 [2023-04-02 06:46:25,586 INFO L226 Difference]: Without dead ends: 20344 [2023-04-02 06:46:25,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:46:25,590 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1442 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:25,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 3015 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:46:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20344 states. [2023-04-02 06:46:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20344 to 5258. [2023-04-02 06:46:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5254 states have (on average 1.445945945945946) internal successors, (7597), 5254 states have internal predecessors, (7597), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 7600 transitions. [2023-04-02 06:46:30,518 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 7600 transitions. Word has length 128 [2023-04-02 06:46:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:30,519 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 7600 transitions. [2023-04-02 06:46:30,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 13 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 7600 transitions. [2023-04-02 06:46:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:46:30,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:30,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:30,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:46:30,520 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:30,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1433884471, now seen corresponding path program 1 times [2023-04-02 06:46:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:30,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171100054] [2023-04-02 06:46:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:30,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:32,113 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 06:46:32,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171100054] [2023-04-02 06:46:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171100054] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:32,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:32,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-04-02 06:46:32,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947490041] [2023-04-02 06:46:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:32,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 06:46:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 06:46:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2023-04-02 06:46:32,114 INFO L87 Difference]: Start difference. First operand 5258 states and 7600 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 25 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)