/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:29:28,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:29:28,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:29:28,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:29:28,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:29:28,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:29:28,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:29:28,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:29:28,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:29:28,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:29:28,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:29:28,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:29:28,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:29:28,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:29:28,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:29:28,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:29:28,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:29:28,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:29:28,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:29:28,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:29:28,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:29:28,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:29:28,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:29:28,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:29:28,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:29:28,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:29:28,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:29:28,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:29:28,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:29:28,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:29:28,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:29:28,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:29:28,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:29:28,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:29:28,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:29:28,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:29:28,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:29:28,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:29:28,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:29:28,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:29:28,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:29:28,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:29:28,238 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:29:28,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:29:28,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:29:28,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:29:28,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:29:28,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:29:28,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:29:28,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:29:28,241 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:29:28,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:29:28,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:29:28,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:29:28,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:29:28,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:29:28,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:29:28,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:29:28,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:29:28,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:29:28,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:29:28,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:29:28,245 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:29:28,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:29:28,245 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:29:28,245 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:29:28,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:29:28,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:29:28,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:29:28,483 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:29:28,483 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:29:28,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-03-31 01:29:29,660 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:29:29,877 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:29:29,877 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-03-31 01:29:29,892 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417cc6e50/35c0afdd3e994c3381f45e5b5c9e888c/FLAG16e7cff0e [2023-03-31 01:29:29,905 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417cc6e50/35c0afdd3e994c3381f45e5b5c9e888c [2023-03-31 01:29:29,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:29:29,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:29:29,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:29:29,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:29:29,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:29:29,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:29:29" (1/1) ... [2023-03-31 01:29:29,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb626e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:29, skipping insertion in model container [2023-03-31 01:29:29,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:29:29" (1/1) ... [2023-03-31 01:29:29,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:29:29,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:29:30,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c[28194,28207] [2023-03-31 01:29:30,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:29:30,297 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:29:30,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c[28194,28207] [2023-03-31 01:29:30,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:29:30,379 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:29:30,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30 WrapperNode [2023-03-31 01:29:30,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:29:30,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:29:30,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:29:30,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:29:30,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:29:30,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:29:30,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:29:30,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:29:30,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (1/1) ... [2023-03-31 01:29:30,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:29:30,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:29:30,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:29:30,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:29:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:29:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:29:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:29:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:29:30,767 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:29:30,769 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:29:31,504 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:29:31,512 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:29:31,513 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:29:31,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:29:31 BoogieIcfgContainer [2023-03-31 01:29:31,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:29:31,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:29:31,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:29:31,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:29:31,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:29:29" (1/3) ... [2023-03-31 01:29:31,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d508a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:29:31, skipping insertion in model container [2023-03-31 01:29:31,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:30" (2/3) ... [2023-03-31 01:29:31,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d508a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:29:31, skipping insertion in model container [2023-03-31 01:29:31,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:29:31" (3/3) ... [2023-03-31 01:29:31,521 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-03-31 01:29:31,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:29:31,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:29:31,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:29:31,588 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;@4b675bc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:29:31,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:29:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 289 states have internal predecessors, (520), 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) [2023-03-31 01:29:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:29:31,608 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:31,609 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] [2023-03-31 01:29:31,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:31,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2119737232, now seen corresponding path program 1 times [2023-03-31 01:29:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725941023] [2023-03-31 01:29:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:29:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:29:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:29:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:29:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:29:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:29:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:32,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725941023] [2023-03-31 01:29:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725941023] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:29:32,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227304685] [2023-03-31 01:29:32,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:32,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:29:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:29:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:29:32,734 INFO L87 Difference]: Start difference. First operand has 310 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 289 states have internal predecessors, (520), 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 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 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) [2023-03-31 01:29:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:35,044 INFO L93 Difference]: Finished difference Result 431 states and 737 transitions. [2023-03-31 01:29:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:29:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 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 104 [2023-03-31 01:29:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:35,056 INFO L225 Difference]: With dead ends: 431 [2023-03-31 01:29:35,057 INFO L226 Difference]: Without dead ends: 317 [2023-03-31 01:29:35,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:29:35,062 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 724 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:35,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 80 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:29:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-03-31 01:29:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 305. [2023-03-31 01:29:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 285 states have (on average 1.8) internal successors, (513), 285 states have internal predecessors, (513), 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) [2023-03-31 01:29:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 532 transitions. [2023-03-31 01:29:35,192 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 532 transitions. Word has length 104 [2023-03-31 01:29:35,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:35,192 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 532 transitions. [2023-03-31 01:29:35,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 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) [2023-03-31 01:29:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 532 transitions. [2023-03-31 01:29:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:29:35,195 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:35,196 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] [2023-03-31 01:29:35,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:29:35,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:35,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1751583342, now seen corresponding path program 1 times [2023-03-31 01:29:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:35,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594175941] [2023-03-31 01:29:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:29:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:29:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:29:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:29:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:29:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:29:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:36,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594175941] [2023-03-31 01:29:36,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594175941] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:36,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:29:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840112322] [2023-03-31 01:29:36,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:29:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:36,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:29:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:29:36,040 INFO L87 Difference]: Start difference. First operand 305 states and 532 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 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) [2023-03-31 01:29:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:40,093 INFO L93 Difference]: Finished difference Result 434 states and 741 transitions. [2023-03-31 01:29:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:29:40,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 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 104 [2023-03-31 01:29:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:40,097 INFO L225 Difference]: With dead ends: 434 [2023-03-31 01:29:40,097 INFO L226 Difference]: Without dead ends: 327 [2023-03-31 01:29:40,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:29:40,099 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 733 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 3968 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:40,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 126 Invalid, 4026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3968 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:29:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-03-31 01:29:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 305. [2023-03-31 01:29:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 285 states have (on average 1.6526315789473685) internal successors, (471), 285 states have internal predecessors, (471), 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) [2023-03-31 01:29:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 490 transitions. [2023-03-31 01:29:40,161 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 490 transitions. Word has length 104 [2023-03-31 01:29:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:40,166 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 490 transitions. [2023-03-31 01:29:40,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 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) [2023-03-31 01:29:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 490 transitions. [2023-03-31 01:29:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-03-31 01:29:40,173 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:40,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:40,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:29:40,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:40,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 167844480, now seen corresponding path program 1 times [2023-03-31 01:29:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:40,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288248915] [2023-03-31 01:29:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:29:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 01:29:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:29:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288248915] [2023-03-31 01:29:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288248915] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:40,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:40,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504654368] [2023-03-31 01:29:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:40,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:40,959 INFO L87 Difference]: Start difference. First operand 305 states and 490 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 5 states have internal predecessors, (127), 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) [2023-03-31 01:29:44,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:44,178 INFO L93 Difference]: Finished difference Result 532 states and 860 transitions. [2023-03-31 01:29:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:44,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 5 states have internal predecessors, (127), 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 145 [2023-03-31 01:29:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:44,182 INFO L225 Difference]: With dead ends: 532 [2023-03-31 01:29:44,182 INFO L226 Difference]: Without dead ends: 431 [2023-03-31 01:29:44,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:44,185 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2464 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:44,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 94 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-31 01:29:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-03-31 01:29:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 395. [2023-03-31 01:29:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 362 states have (on average 1.6546961325966851) internal successors, (599), 363 states have internal predecessors, (599), 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) [2023-03-31 01:29:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 632 transitions. [2023-03-31 01:29:44,277 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 632 transitions. Word has length 145 [2023-03-31 01:29:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:44,277 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 632 transitions. [2023-03-31 01:29:44,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 5 states have internal predecessors, (127), 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) [2023-03-31 01:29:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 632 transitions. [2023-03-31 01:29:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 01:29:44,282 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:44,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:44,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:29:44,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:44,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:44,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1537331487, now seen corresponding path program 1 times [2023-03-31 01:29:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:44,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912854466] [2023-03-31 01:29:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-31 01:29:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-31 01:29:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-31 01:29:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912854466] [2023-03-31 01:29:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912854466] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745100851] [2023-03-31 01:29:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:44,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:44,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:44,931 INFO L87 Difference]: Start difference. First operand 395 states and 632 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-03-31 01:29:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:48,423 INFO L93 Difference]: Finished difference Result 817 states and 1308 transitions. [2023-03-31 01:29:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:48,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 5 states have internal predecessors, (130), 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 148 [2023-03-31 01:29:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:48,428 INFO L225 Difference]: With dead ends: 817 [2023-03-31 01:29:48,428 INFO L226 Difference]: Without dead ends: 626 [2023-03-31 01:29:48,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:48,431 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 953 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:48,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 99 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-31 01:29:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-03-31 01:29:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 570. [2023-03-31 01:29:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 510 states have (on average 1.6588235294117648) internal successors, (846), 514 states have internal predecessors, (846), 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) [2023-03-31 01:29:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 909 transitions. [2023-03-31 01:29:48,531 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 909 transitions. Word has length 148 [2023-03-31 01:29:48,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:48,532 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 909 transitions. [2023-03-31 01:29:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-03-31 01:29:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 909 transitions. [2023-03-31 01:29:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-03-31 01:29:48,535 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:48,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:48,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:29:48,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:48,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:48,537 INFO L85 PathProgramCache]: Analyzing trace with hash 369474418, now seen corresponding path program 1 times [2023-03-31 01:29:48,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:48,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894230853] [2023-03-31 01:29:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-03-31 01:29:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-03-31 01:29:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894230853] [2023-03-31 01:29:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894230853] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098555815] [2023-03-31 01:29:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:49,251 INFO L87 Difference]: Start difference. First operand 570 states and 909 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 5 states have internal predecessors, (133), 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) [2023-03-31 01:29:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:52,341 INFO L93 Difference]: Finished difference Result 1382 states and 2199 transitions. [2023-03-31 01:29:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:52,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 5 states have internal predecessors, (133), 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 151 [2023-03-31 01:29:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:52,350 INFO L225 Difference]: With dead ends: 1382 [2023-03-31 01:29:52,350 INFO L226 Difference]: Without dead ends: 1016 [2023-03-31 01:29:52,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:52,357 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1904 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:52,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 89 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:29:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-03-31 01:29:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 906. [2023-03-31 01:29:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 790 states have (on average 1.6531645569620252) internal successors, (1306), 802 states have internal predecessors, (1306), 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) [2023-03-31 01:29:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1433 transitions. [2023-03-31 01:29:52,527 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1433 transitions. Word has length 151 [2023-03-31 01:29:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:52,528 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1433 transitions. [2023-03-31 01:29:52,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 5 states have internal predecessors, (133), 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) [2023-03-31 01:29:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1433 transitions. [2023-03-31 01:29:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:29:52,530 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:52,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:52,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:29:52,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:52,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 801645152, now seen corresponding path program 1 times [2023-03-31 01:29:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061823041] [2023-03-31 01:29:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-03-31 01:29:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-03-31 01:29:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:53,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:53,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061823041] [2023-03-31 01:29:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061823041] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247500398] [2023-03-31 01:29:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:53,150 INFO L87 Difference]: Start difference. First operand 906 states and 1433 transitions. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 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) [2023-03-31 01:29:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:56,560 INFO L93 Difference]: Finished difference Result 2470 states and 3891 transitions. [2023-03-31 01:29:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 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 154 [2023-03-31 01:29:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:56,568 INFO L225 Difference]: With dead ends: 2470 [2023-03-31 01:29:56,569 INFO L226 Difference]: Without dead ends: 1768 [2023-03-31 01:29:56,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:56,572 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2245 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:56,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 94 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-03-31 01:29:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2023-03-31 01:29:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1550. [2023-03-31 01:29:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1318 states have (on average 1.637329286798179) internal successors, (2158), 1350 states have internal predecessors, (2158), 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) [2023-03-31 01:29:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2421 transitions. [2023-03-31 01:29:56,823 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2421 transitions. Word has length 154 [2023-03-31 01:29:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:56,824 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 2421 transitions. [2023-03-31 01:29:56,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 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) [2023-03-31 01:29:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2421 transitions. [2023-03-31 01:29:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 01:29:56,827 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:56,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:29:56,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:56,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1870716042, now seen corresponding path program 1 times [2023-03-31 01:29:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876013001] [2023-03-31 01:29:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-03-31 01:29:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-03-31 01:29:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:57,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:57,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876013001] [2023-03-31 01:29:57,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876013001] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:57,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:57,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:29:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276744251] [2023-03-31 01:29:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:29:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:29:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:29:57,829 INFO L87 Difference]: Start difference. First operand 1550 states and 2421 transitions. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 11 states have internal predecessors, (139), 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) [2023-03-31 01:30:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:11,588 INFO L93 Difference]: Finished difference Result 11847 states and 19035 transitions. [2023-03-31 01:30:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-03-31 01:30:11,589 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 11 states have internal predecessors, (139), 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 157 [2023-03-31 01:30:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:11,639 INFO L225 Difference]: With dead ends: 11847 [2023-03-31 01:30:11,639 INFO L226 Difference]: Without dead ends: 10501 [2023-03-31 01:30:11,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-03-31 01:30:11,653 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 7682 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 5934 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7693 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 6265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 5934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:11,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7693 Valid, 201 Invalid, 6265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 5934 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-03-31 01:30:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2023-03-31 01:30:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 9055. [2023-03-31 01:30:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9055 states, 7572 states have (on average 1.6402535657686212) internal successors, (12420), 7799 states have internal predecessors, (12420), 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) [2023-03-31 01:30:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9055 states to 9055 states and 14483 transitions. [2023-03-31 01:30:13,098 INFO L78 Accepts]: Start accepts. Automaton has 9055 states and 14483 transitions. Word has length 157 [2023-03-31 01:30:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:13,098 INFO L495 AbstractCegarLoop]: Abstraction has 9055 states and 14483 transitions. [2023-03-31 01:30:13,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 11 states have internal predecessors, (139), 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) [2023-03-31 01:30:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9055 states and 14483 transitions. [2023-03-31 01:30:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 01:30:13,106 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:13,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:13,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:30:13,107 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:13,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 935916441, now seen corresponding path program 1 times [2023-03-31 01:30:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402588300] [2023-03-31 01:30:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:13,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:30:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:30:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-31 01:30:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-31 01:30:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-03-31 01:30:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402588300] [2023-03-31 01:30:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402588300] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:14,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:14,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:30:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965844426] [2023-03-31 01:30:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:30:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:30:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:30:14,115 INFO L87 Difference]: Start difference. First operand 9055 states and 14483 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 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)