/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:25:32,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:25:32,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:25:32,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:25:32,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:25:32,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:25:32,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:25:32,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:25:32,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:25:32,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:25:32,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:25:32,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:25:32,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:25:32,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:25:32,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:25:32,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:25:32,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:25:32,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:25:32,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:25:32,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:25:32,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:25:32,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:25:32,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:25:32,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:25:32,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:25:32,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:25:32,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:25:32,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:25:32,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:25:32,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:25:32,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:25:32,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:25:32,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:25:32,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:25:32,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:25:32,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:25:32,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:25:32,237 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:25:32,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:25:32,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:25:32,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:25:32,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:25:32,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:25:32,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:25:32,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:25:32,238 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:25:32,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:25:32,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:25:32,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:25:32,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:25:32,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:25:32,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:25:32,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:25:32,241 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:25:32,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:25:32,241 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:25:32,241 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:25:32,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:25:32,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:25:32,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:25:32,399 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:25:32,399 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:25:32,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2023-04-02 05:25:33,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:25:33,789 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:25:33,789 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2023-04-02 05:25:33,802 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095ba2f5f/85ff0f5bcae74f87b4ff8b07cfdd126f/FLAGe78ee30a7 [2023-04-02 05:25:33,815 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095ba2f5f/85ff0f5bcae74f87b4ff8b07cfdd126f [2023-04-02 05:25:33,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:25:33,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:25:33,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:25:33,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:25:33,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:25:33,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:25:33" (1/1) ... [2023-04-02 05:25:33,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a11800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:33, skipping insertion in model container [2023-04-02 05:25:33,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:25:33" (1/1) ... [2023-04-02 05:25:33,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:25:33,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:25:34,099 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2023-04-02 05:25:34,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:25:34,112 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:25:34,183 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2023-04-02 05:25:34,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:25:34,198 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:25:34,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34 WrapperNode [2023-04-02 05:25:34,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:25:34,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:25:34,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:25:34,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:25:34,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:25:34,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:25:34,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:25:34,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:25:34,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (1/1) ... [2023-04-02 05:25:34,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:25:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:25:34,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:25:34,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:25:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:25:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:25:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:25:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:25:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:25:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:25:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:25:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:25:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:25:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:25:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:25:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:25:34,530 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:25:34,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:25:35,242 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:25:35,248 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:25:35,249 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:25:35,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:25:35 BoogieIcfgContainer [2023-04-02 05:25:35,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:25:35,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:25:35,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:25:35,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:25:35,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:25:33" (1/3) ... [2023-04-02 05:25:35,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3427c22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:25:35, skipping insertion in model container [2023-04-02 05:25:35,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:34" (2/3) ... [2023-04-02 05:25:35,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3427c22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:25:35, skipping insertion in model container [2023-04-02 05:25:35,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:25:35" (3/3) ... [2023-04-02 05:25:35,255 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2023-04-02 05:25:35,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:25:35,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:25:35,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:25:35,311 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;@a102508, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:25:35,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:25:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 300 states have (on average 1.7866666666666666) internal successors, (536), 301 states have internal predecessors, (536), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:25:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:25:35,327 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:35,327 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] [2023-04-02 05:25:35,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:35,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -971034854, now seen corresponding path program 1 times [2023-04-02 05:25:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:35,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94561592] [2023-04-02 05:25:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:25:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:25:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:25:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:25:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:25:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:25:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94561592] [2023-04-02 05:25:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94561592] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:36,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:25:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307164153] [2023-04-02 05:25:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:36,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 05:25:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 05:25:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 05:25:36,264 INFO L87 Difference]: Start difference. First operand has 322 states, 300 states have (on average 1.7866666666666666) internal successors, (536), 301 states have internal predecessors, (536), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:25:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:38,019 INFO L93 Difference]: Finished difference Result 471 states and 801 transitions. [2023-04-02 05:25:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:25:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 108 [2023-04-02 05:25:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:38,029 INFO L225 Difference]: With dead ends: 471 [2023-04-02 05:25:38,029 INFO L226 Difference]: Without dead ends: 337 [2023-04-02 05:25:38,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:25:38,039 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2092 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:38,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 76 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:25:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-02 05:25:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 317. [2023-04-02 05:25:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 297 states have (on average 1.7811447811447811) internal successors, (529), 297 states have internal predecessors, (529), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:25:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 548 transitions. [2023-04-02 05:25:38,132 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 548 transitions. Word has length 108 [2023-04-02 05:25:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:38,132 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 548 transitions. [2023-04-02 05:25:38,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:25:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 548 transitions. [2023-04-02 05:25:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:25:38,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:38,135 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] [2023-04-02 05:25:38,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:25:38,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:38,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash -77548516, now seen corresponding path program 1 times [2023-04-02 05:25:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55911193] [2023-04-02 05:25:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:25:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:25:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:25:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:25:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:25:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:25:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55911193] [2023-04-02 05:25:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55911193] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:38,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:25:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452092519] [2023-04-02 05:25:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:38,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:25:38,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:25:38,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:25:38,818 INFO L87 Difference]: Start difference. First operand 317 states and 548 transitions. Second operand has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:42,289 INFO L93 Difference]: Finished difference Result 474 states and 805 transitions. [2023-04-02 05:25:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:25:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 108 [2023-04-02 05:25:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:42,292 INFO L225 Difference]: With dead ends: 474 [2023-04-02 05:25:42,292 INFO L226 Difference]: Without dead ends: 347 [2023-04-02 05:25:42,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:25:42,294 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 829 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4000 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:42,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 126 Invalid, 4050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4000 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 05:25:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-04-02 05:25:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 317. [2023-04-02 05:25:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 297 states have (on average 1.6666666666666667) internal successors, (495), 297 states have internal predecessors, (495), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:25:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 514 transitions. [2023-04-02 05:25:42,346 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 514 transitions. Word has length 108 [2023-04-02 05:25:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:42,347 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 514 transitions. [2023-04-02 05:25:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 514 transitions. [2023-04-02 05:25:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 05:25:42,354 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:42,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:42,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:25:42,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:42,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:42,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1769140282, now seen corresponding path program 1 times [2023-04-02 05:25:42,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:42,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239910478] [2023-04-02 05:25:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:42,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:25:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:25:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:25:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:25:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:25:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:25:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239910478] [2023-04-02 05:25:42,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239910478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:42,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:42,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:25:42,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390158776] [2023-04-02 05:25:42,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:42,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:25:42,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:25:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:25:42,920 INFO L87 Difference]: Start difference. First operand 317 states and 514 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:46,472 INFO L93 Difference]: Finished difference Result 598 states and 978 transitions. [2023-04-02 05:25:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:25:46,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 141 [2023-04-02 05:25:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:46,477 INFO L225 Difference]: With dead ends: 598 [2023-04-02 05:25:46,477 INFO L226 Difference]: Without dead ends: 477 [2023-04-02 05:25:46,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:25:46,479 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1654 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:46,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 69 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 05:25:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-04-02 05:25:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 429. [2023-04-02 05:25:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 396 states have (on average 1.6590909090909092) internal successors, (657), 397 states have internal predecessors, (657), 16 states have call successors, (16), 16 states have call predecessors, (16), 16 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2023-04-02 05:25:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 690 transitions. [2023-04-02 05:25:46,555 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 690 transitions. Word has length 141 [2023-04-02 05:25:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:46,556 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 690 transitions. [2023-04-02 05:25:46,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 690 transitions. [2023-04-02 05:25:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:25:46,559 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:46,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:25:46,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:46,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1899857248, now seen corresponding path program 1 times [2023-04-02 05:25:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900966246] [2023-04-02 05:25:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:25:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:25:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:25:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:25:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:25:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:25:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:47,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900966246] [2023-04-02 05:25:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900966246] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:25:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159142471] [2023-04-02 05:25:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:47,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:25:47,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:25:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:25:47,205 INFO L87 Difference]: Start difference. First operand 429 states and 690 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:50,617 INFO L93 Difference]: Finished difference Result 965 states and 1560 transitions. [2023-04-02 05:25:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:25:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 144 [2023-04-02 05:25:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:50,633 INFO L225 Difference]: With dead ends: 965 [2023-04-02 05:25:50,633 INFO L226 Difference]: Without dead ends: 732 [2023-04-02 05:25:50,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:25:50,653 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1460 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:50,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 73 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 05:25:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-04-02 05:25:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 644. [2023-04-02 05:25:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 584 states have (on average 1.6575342465753424) internal successors, (968), 588 states have internal predecessors, (968), 28 states have call successors, (28), 28 states have call predecessors, (28), 31 states have return successors, (35), 27 states have call predecessors, (35), 27 states have call successors, (35) [2023-04-02 05:25:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1031 transitions. [2023-04-02 05:25:50,807 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1031 transitions. Word has length 144 [2023-04-02 05:25:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:50,807 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1031 transitions. [2023-04-02 05:25:50,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1031 transitions. [2023-04-02 05:25:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 05:25:50,809 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:50,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:50,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:25:50,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:50,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1351952014, now seen corresponding path program 1 times [2023-04-02 05:25:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:50,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862681051] [2023-04-02 05:25:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:50,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:25:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:25:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:25:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 05:25:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 05:25:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862681051] [2023-04-02 05:25:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862681051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:51,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:51,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:25:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576527101] [2023-04-02 05:25:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:51,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:25:51,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:25:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:25:51,324 INFO L87 Difference]: Start difference. First operand 644 states and 1031 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:54,389 INFO L93 Difference]: Finished difference Result 1680 states and 2705 transitions. [2023-04-02 05:25:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:25:54,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 147 [2023-04-02 05:25:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:54,396 INFO L225 Difference]: With dead ends: 1680 [2023-04-02 05:25:54,396 INFO L226 Difference]: Without dead ends: 1232 [2023-04-02 05:25:54,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:25:54,401 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2410 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:54,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 72 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:25:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-04-02 05:25:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1058. [2023-04-02 05:25:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 942 states have (on average 1.6496815286624205) internal successors, (1554), 954 states have internal predecessors, (1554), 52 states have call successors, (52), 52 states have call predecessors, (52), 63 states have return successors, (75), 51 states have call predecessors, (75), 51 states have call successors, (75) [2023-04-02 05:25:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1681 transitions. [2023-04-02 05:25:54,539 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1681 transitions. Word has length 147 [2023-04-02 05:25:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:54,540 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1681 transitions. [2023-04-02 05:25:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1681 transitions. [2023-04-02 05:25:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 05:25:54,542 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:54,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:54,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:25:54,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:54,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash 303012987, now seen corresponding path program 1 times [2023-04-02 05:25:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:54,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375442201] [2023-04-02 05:25:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:25:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:25:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:25:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 05:25:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375442201] [2023-04-02 05:25:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375442201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:25:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934381692] [2023-04-02 05:25:55,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:25:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:25:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:25:55,034 INFO L87 Difference]: Start difference. First operand 1058 states and 1681 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:58,061 INFO L93 Difference]: Finished difference Result 3062 states and 4899 transitions. [2023-04-02 05:25:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 05:25:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 150 [2023-04-02 05:25:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:58,070 INFO L225 Difference]: With dead ends: 3062 [2023-04-02 05:25:58,070 INFO L226 Difference]: Without dead ends: 2200 [2023-04-02 05:25:58,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:25:58,072 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2604 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:58,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2606 Valid, 67 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 05:25:58,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2023-04-02 05:25:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1854. [2023-04-02 05:25:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1622 states have (on average 1.6362515413070284) internal successors, (2654), 1654 states have internal predecessors, (2654), 100 states have call successors, (100), 100 states have call predecessors, (100), 131 states have return successors, (163), 99 states have call predecessors, (163), 99 states have call successors, (163) [2023-04-02 05:25:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2917 transitions. [2023-04-02 05:25:58,302 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2917 transitions. Word has length 150 [2023-04-02 05:25:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:58,303 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 2917 transitions. [2023-04-02 05:25:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:25:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2917 transitions. [2023-04-02 05:25:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-02 05:25:58,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:58,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:58,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:25:58,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:58,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1395388512, now seen corresponding path program 1 times [2023-04-02 05:25:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093355824] [2023-04-02 05:25:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:25:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:25:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:25:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:25:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:59,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093355824] [2023-04-02 05:25:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093355824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:59,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:59,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:25:59,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561319557] [2023-04-02 05:25:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:59,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:25:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:25:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:25:59,242 INFO L87 Difference]: Start difference. First operand 1854 states and 2917 transitions. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:26:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:26:13,581 INFO L93 Difference]: Finished difference Result 14927 states and 24307 transitions. [2023-04-02 05:26:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-04-02 05:26:13,582 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 153 [2023-04-02 05:26:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:26:13,645 INFO L225 Difference]: With dead ends: 14927 [2023-04-02 05:26:13,645 INFO L226 Difference]: Without dead ends: 13269 [2023-04-02 05:26:13,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2910 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-04-02 05:26:13,655 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 5584 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 7721 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5595 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 7914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 7721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:26:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5595 Valid, 284 Invalid, 7914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 7721 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 05:26:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13269 states. [2023-04-02 05:26:14,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13269 to 10991. [2023-04-02 05:26:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10991 states, 9508 states have (on average 1.6327303323517037) internal successors, (15524), 9735 states have internal predecessors, (15524), 628 states have call successors, (628), 628 states have call predecessors, (628), 854 states have return successors, (1435), 627 states have call predecessors, (1435), 627 states have call successors, (1435) [2023-04-02 05:26:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10991 states to 10991 states and 17587 transitions. [2023-04-02 05:26:14,845 INFO L78 Accepts]: Start accepts. Automaton has 10991 states and 17587 transitions. Word has length 153 [2023-04-02 05:26:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:26:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 10991 states and 17587 transitions. [2023-04-02 05:26:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:26:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 10991 states and 17587 transitions. [2023-04-02 05:26:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:26:14,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:26:14,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:26:14,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:26:14,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:26:14,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:26:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash -902385453, now seen corresponding path program 1 times [2023-04-02 05:26:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:26:14,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323695824] [2023-04-02 05:26:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:26:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:26:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:26:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:26:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:26:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:26:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:26:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:26:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:26:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:26:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:26:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323695824] [2023-04-02 05:26:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323695824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:26:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:26:15,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:26:15,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932964733] [2023-04-02 05:26:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:26:15,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:26:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:26:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:26:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:26:15,580 INFO L87 Difference]: Start difference. First operand 10991 states and 17587 transitions. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:26:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:26:23,474 INFO L93 Difference]: Finished difference Result 37031 states and 60248 transitions. [2023-04-02 05:26:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:26:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 154 [2023-04-02 05:26:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:26:23,568 INFO L225 Difference]: With dead ends: 37031 [2023-04-02 05:26:23,568 INFO L226 Difference]: Without dead ends: 26236 [2023-04-02 05:26:23,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:26:23,598 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 4098 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 3502 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:26:23,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 167 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3502 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 05:26:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26236 states. [2023-04-02 05:26:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26236 to 21844. [2023-04-02 05:26:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21844 states, 18862 states have (on average 1.6279291697593044) internal successors, (30706), 19340 states have internal predecessors, (30706), 1252 states have call successors, (1252), 1252 states have call predecessors, (1252), 1729 states have return successors, (3019), 1251 states have call predecessors, (3019), 1251 states have call successors, (3019) [2023-04-02 05:26:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21844 states to 21844 states and 34977 transitions. [2023-04-02 05:26:25,727 INFO L78 Accepts]: Start accepts. Automaton has 21844 states and 34977 transitions. Word has length 154 [2023-04-02 05:26:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:26:25,727 INFO L495 AbstractCegarLoop]: Abstraction has 21844 states and 34977 transitions. [2023-04-02 05:26:25,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:26:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21844 states and 34977 transitions. [2023-04-02 05:26:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:26:25,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:26:25,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:26:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:26:25,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:26:25,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:26:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -612608947, now seen corresponding path program 1 times [2023-04-02 05:26:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:26:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108935247] [2023-04-02 05:26:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:26:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:26:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:26:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:26:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:26:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:26:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:26:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:26:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 05:26:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:26:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:26:26,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108935247] [2023-04-02 05:26:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108935247] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:26:26,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:26:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:26:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895252310] [2023-04-02 05:26:26,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:26:26,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:26:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:26:26,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:26:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:26:26,621 INFO L87 Difference]: Start difference. First operand 21844 states and 34977 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:26:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:26:45,490 INFO L93 Difference]: Finished difference Result 48191 states and 78597 transitions. [2023-04-02 05:26:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-04-02 05:26:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 155 [2023-04-02 05:26:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:26:45,642 INFO L225 Difference]: With dead ends: 48191 [2023-04-02 05:26:45,642 INFO L226 Difference]: Without dead ends: 39300 [2023-04-02 05:26:45,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5366 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2130, Invalid=12150, Unknown=0, NotChecked=0, Total=14280 [2023-04-02 05:26:45,669 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 7648 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 10339 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7665 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 10596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 10339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:26:45,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7665 Valid, 404 Invalid, 10596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 10339 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-02 05:26:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39300 states. [2023-04-02 05:26:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39300 to 30340. [2023-04-02 05:26:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30340 states, 26261 states have (on average 1.6340581089829025) internal successors, (42912), 26900 states have internal predecessors, (42912), 1720 states have call successors, (1720), 1720 states have call predecessors, (1720), 2358 states have return successors, (4089), 1719 states have call predecessors, (4089), 1719 states have call successors, (4089) [2023-04-02 05:26:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30340 states to 30340 states and 48721 transitions. [2023-04-02 05:26:48,441 INFO L78 Accepts]: Start accepts. Automaton has 30340 states and 48721 transitions. Word has length 155 [2023-04-02 05:26:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:26:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 30340 states and 48721 transitions. [2023-04-02 05:26:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:26:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 30340 states and 48721 transitions. [2023-04-02 05:26:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:26:48,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:26:48,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:26:48,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:26:48,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:26:48,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:26:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash 872757133, now seen corresponding path program 1 times [2023-04-02 05:26:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:26:48,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547584304] [2023-04-02 05:26:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:26:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:26:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:26:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:26:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:26:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:26:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:26:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:26:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 05:26:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:26:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:26:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547584304] [2023-04-02 05:26:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547584304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:26:49,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:26:49,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:26:49,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115693105] [2023-04-02 05:26:49,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:26:49,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:26:49,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:26:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:26:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:26:49,283 INFO L87 Difference]: Start difference. First operand 30340 states and 48721 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:27:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:06,251 INFO L93 Difference]: Finished difference Result 51324 states and 83903 transitions. [2023-04-02 05:27:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-04-02 05:27:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 155 [2023-04-02 05:27:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:06,381 INFO L225 Difference]: With dead ends: 51324 [2023-04-02 05:27:06,381 INFO L226 Difference]: Without dead ends: 43138 [2023-04-02 05:27:06,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5004 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2051, Invalid=11521, Unknown=0, NotChecked=0, Total=13572 [2023-04-02 05:27:06,407 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 7142 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 8805 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7158 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 9054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 8805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:06,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7158 Valid, 353 Invalid, 9054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 8805 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-02 05:27:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43138 states. [2023-04-02 05:27:09,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43138 to 32874. [2023-04-02 05:27:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32874 states, 28485 states have (on average 1.6350359838511497) internal successors, (46574), 29162 states have internal predecessors, (46574), 1856 states have call successors, (1856), 1856 states have call predecessors, (1856), 2532 states have return successors, (4355), 1855 states have call predecessors, (4355), 1855 states have call successors, (4355) [2023-04-02 05:27:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32874 states to 32874 states and 52785 transitions. [2023-04-02 05:27:09,665 INFO L78 Accepts]: Start accepts. Automaton has 32874 states and 52785 transitions. Word has length 155 [2023-04-02 05:27:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:09,666 INFO L495 AbstractCegarLoop]: Abstraction has 32874 states and 52785 transitions. [2023-04-02 05:27:09,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:27:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 32874 states and 52785 transitions. [2023-04-02 05:27:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:27:09,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:09,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:27:09,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:09,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash 57967405, now seen corresponding path program 1 times [2023-04-02 05:27:09,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351889970] [2023-04-02 05:27:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:27:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:27:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:27:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:27:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:27:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 05:27:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:10,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351889970] [2023-04-02 05:27:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351889970] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:10,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:10,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:27:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245673412] [2023-04-02 05:27:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:10,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:27:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:27:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:27:10,313 INFO L87 Difference]: Start difference. First operand 32874 states and 52785 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:27:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:27,740 INFO L93 Difference]: Finished difference Result 58578 states and 95615 transitions. [2023-04-02 05:27:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-04-02 05:27:27,740 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 155 [2023-04-02 05:27:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:27,886 INFO L225 Difference]: With dead ends: 58578 [2023-04-02 05:27:27,886 INFO L226 Difference]: Without dead ends: 45388 [2023-04-02 05:27:27,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4797 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1995, Invalid=11115, Unknown=0, NotChecked=0, Total=13110 [2023-04-02 05:27:27,932 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 6296 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 8292 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6311 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 8526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 8292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:27,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6311 Valid, 336 Invalid, 8526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 8292 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-02 05:27:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45388 states. [2023-04-02 05:27:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45388 to 34975. [2023-04-02 05:27:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34975 states, 30350 states have (on average 1.6378583196046128) internal successors, (49709), 31073 states have internal predecessors, (49709), 1951 states have call successors, (1951), 1951 states have call predecessors, (1951), 2673 states have return successors, (4523), 1950 states have call predecessors, (4523), 1950 states have call successors, (4523) [2023-04-02 05:27:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34975 states to 34975 states and 56183 transitions. [2023-04-02 05:27:31,540 INFO L78 Accepts]: Start accepts. Automaton has 34975 states and 56183 transitions. Word has length 155 [2023-04-02 05:27:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:31,541 INFO L495 AbstractCegarLoop]: Abstraction has 34975 states and 56183 transitions. [2023-04-02 05:27:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:27:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 34975 states and 56183 transitions. [2023-04-02 05:27:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:27:31,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:31,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:27:31,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:31,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash 829380727, now seen corresponding path program 1 times [2023-04-02 05:27:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764443502] [2023-04-02 05:27:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:27:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:27:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:27:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:27:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:27:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:27:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:32,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:32,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764443502] [2023-04-02 05:27:32,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764443502] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:32,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:32,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:27:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145224337] [2023-04-02 05:27:32,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:32,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:27:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:27:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:27:32,255 INFO L87 Difference]: Start difference. First operand 34975 states and 56183 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:43,461 INFO L93 Difference]: Finished difference Result 118423 states and 193206 transitions. [2023-04-02 05:27:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:27:43,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 155 [2023-04-02 05:27:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:43,705 INFO L225 Difference]: With dead ends: 118423 [2023-04-02 05:27:43,705 INFO L226 Difference]: Without dead ends: 83644 [2023-04-02 05:27:43,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:27:43,754 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2462 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 3834 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:43,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2472 Valid, 139 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3834 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 05:27:43,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83644 states. [2023-04-02 05:27:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83644 to 69762. [2023-04-02 05:27:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69762 states, 60456 states have (on average 1.633518592033876) internal successors, (98756), 61994 states have internal predecessors, (98756), 3884 states have call successors, (3884), 3884 states have call predecessors, (3884), 5421 states have return successors, (9537), 3883 states have call predecessors, (9537), 3883 states have call successors, (9537) [2023-04-02 05:27:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69762 states to 69762 states and 112177 transitions. [2023-04-02 05:27:49,831 INFO L78 Accepts]: Start accepts. Automaton has 69762 states and 112177 transitions. Word has length 155 [2023-04-02 05:27:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:49,832 INFO L495 AbstractCegarLoop]: Abstraction has 69762 states and 112177 transitions. [2023-04-02 05:27:49,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 69762 states and 112177 transitions. [2023-04-02 05:27:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:27:49,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:49,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:49,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:27:49,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:49,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1198614227, now seen corresponding path program 1 times [2023-04-02 05:27:49,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:49,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126889355] [2023-04-02 05:27:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:49,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:27:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:27:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:27:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:27:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:27:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 05:27:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:50,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126889355] [2023-04-02 05:27:50,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126889355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:50,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:50,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:27:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651158223] [2023-04-02 05:27:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:50,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:27:50,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:27:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:27:50,796 INFO L87 Difference]: Start difference. First operand 69762 states and 112177 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:28:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:28:12,145 INFO L93 Difference]: Finished difference Result 156663 states and 255499 transitions. [2023-04-02 05:28:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-04-02 05:28:12,146 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 155 [2023-04-02 05:28:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:28:12,481 INFO L225 Difference]: With dead ends: 156663 [2023-04-02 05:28:12,481 INFO L226 Difference]: Without dead ends: 114690 [2023-04-02 05:28:12,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4126 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1809, Invalid=9747, Unknown=0, NotChecked=0, Total=11556 [2023-04-02 05:28:12,584 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 5287 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 9677 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5302 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 9850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 9677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:28:12,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5302 Valid, 433 Invalid, 9850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 9677 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-02 05:28:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114690 states. [2023-04-02 05:28:20,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114690 to 93265. [2023-04-02 05:28:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93265 states, 81124 states have (on average 1.6402667521325378) internal successors, (133065), 83111 states have internal predecessors, (133065), 5077 states have call successors, (5077), 5077 states have call predecessors, (5077), 7063 states have return successors, (12223), 5076 states have call predecessors, (12223), 5076 states have call successors, (12223) [2023-04-02 05:28:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93265 states to 93265 states and 150365 transitions. [2023-04-02 05:28:21,014 INFO L78 Accepts]: Start accepts. Automaton has 93265 states and 150365 transitions. Word has length 155 [2023-04-02 05:28:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:28:21,015 INFO L495 AbstractCegarLoop]: Abstraction has 93265 states and 150365 transitions. [2023-04-02 05:28:21,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 11 states have internal predecessors, (137), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:28:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 93265 states and 150365 transitions. [2023-04-02 05:28:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:28:21,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:28:21,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:28:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:28:21,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:28:21,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:28:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1274202758, now seen corresponding path program 1 times [2023-04-02 05:28:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:28:21,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271838726] [2023-04-02 05:28:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:28:21,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:28:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:28:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:28:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:28:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:28:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:28:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:28:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:28:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 05:28:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:28:21,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:28:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271838726] [2023-04-02 05:28:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271838726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:28:21,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:28:21,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:28:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598002677] [2023-04-02 05:28:21,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:28:21,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:28:21,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:28:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:28:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:28:21,835 INFO L87 Difference]: Start difference. First operand 93265 states and 150365 transitions. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:28:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:28:36,644 INFO L93 Difference]: Finished difference Result 202038 states and 331623 transitions. [2023-04-02 05:28:36,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:28:36,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 156 [2023-04-02 05:28:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:28:37,417 INFO L225 Difference]: With dead ends: 202038 [2023-04-02 05:28:37,417 INFO L226 Difference]: Without dead ends: 163237 [2023-04-02 05:28:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:28:37,490 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3036 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:28:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 130 Invalid, 4281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 4232 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 05:28:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163237 states. [2023-04-02 05:28:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163237 to 123504. [2023-04-02 05:28:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123504 states, 107445 states have (on average 1.6419284284983016) internal successors, (176417), 110178 states have internal predecessors, (176417), 6663 states have call successors, (6663), 6663 states have call predecessors, (6663), 9395 states have return successors, (16015), 6662 states have call predecessors, (16015), 6662 states have call successors, (16015) [2023-04-02 05:28:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123504 states to 123504 states and 199095 transitions. [2023-04-02 05:28:48,487 INFO L78 Accepts]: Start accepts. Automaton has 123504 states and 199095 transitions. Word has length 156 [2023-04-02 05:28:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:28:48,487 INFO L495 AbstractCegarLoop]: Abstraction has 123504 states and 199095 transitions. [2023-04-02 05:28:48,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:28:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 123504 states and 199095 transitions. [2023-04-02 05:28:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:28:48,520 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:28:48,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:28:48,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:28:48,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:28:48,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:28:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash 921114376, now seen corresponding path program 1 times [2023-04-02 05:28:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:28:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609899478] [2023-04-02 05:28:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:28:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:28:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:28:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:28:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:28:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:28:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:28:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:28:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:28:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 05:28:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:28:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:28:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609899478] [2023-04-02 05:28:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609899478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:28:49,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:28:49,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:28:49,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315263051] [2023-04-02 05:28:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:28:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:28:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:28:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:28:49,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:28:49,253 INFO L87 Difference]: Start difference. First operand 123504 states and 199095 transitions. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:29:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:29:03,254 INFO L93 Difference]: Finished difference Result 221107 states and 361486 transitions. [2023-04-02 05:29:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:29:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 156 [2023-04-02 05:29:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:29:03,863 INFO L225 Difference]: With dead ends: 221107 [2023-04-02 05:29:03,863 INFO L226 Difference]: Without dead ends: 146429 [2023-04-02 05:29:03,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:29:03,968 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4252 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:29:03,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 128 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 05:29:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146429 states. [2023-04-02 05:29:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146429 to 109421. [2023-04-02 05:29:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109421 states, 95178 states have (on average 1.639979827271008) internal successors, (156090), 97637 states have internal predecessors, (156090), 5892 states have call successors, (5892), 5892 states have call predecessors, (5892), 8350 states have return successors, (14157), 5891 states have call predecessors, (14157), 5891 states have call successors, (14157) [2023-04-02 05:29:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109421 states to 109421 states and 176139 transitions. [2023-04-02 05:29:14,035 INFO L78 Accepts]: Start accepts. Automaton has 109421 states and 176139 transitions. Word has length 156 [2023-04-02 05:29:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:29:14,035 INFO L495 AbstractCegarLoop]: Abstraction has 109421 states and 176139 transitions. [2023-04-02 05:29:14,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:29:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 109421 states and 176139 transitions. [2023-04-02 05:29:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:29:14,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:29:14,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:29:14,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:29:14,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:29:14,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:29:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1372127478, now seen corresponding path program 1 times [2023-04-02 05:29:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:29:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187495343] [2023-04-02 05:29:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:29:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:29:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:29:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:29:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:29:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:29:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:29:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:29:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:29:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:29:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:29:14,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:29:14,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187495343] [2023-04-02 05:29:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187495343] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:29:14,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:29:14,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:29:14,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361906073] [2023-04-02 05:29:14,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:29:14,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:29:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:29:14,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:29:14,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:29:14,785 INFO L87 Difference]: Start difference. First operand 109421 states and 176139 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:29:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:29:37,136 INFO L93 Difference]: Finished difference Result 371750 states and 607292 transitions. [2023-04-02 05:29:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:29:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 156 [2023-04-02 05:29:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:29:38,360 INFO L225 Difference]: With dead ends: 371750 [2023-04-02 05:29:38,360 INFO L226 Difference]: Without dead ends: 262525 [2023-04-02 05:29:38,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:29:38,514 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4160 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3492 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:29:38,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4170 Valid, 149 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3492 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 05:29:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262525 states.