/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/systemc/mem_slave_tlm.5.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:23:27,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:23:27,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:23:27,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:23:27,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:23:27,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:23:27,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:23:27,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:23:27,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:23:27,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:23:27,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:23:27,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:23:27,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:23:27,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:23:27,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:23:27,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:23:27,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:23:27,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:23:27,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:23:27,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:23:27,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:23:27,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:23:27,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:23:27,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:23:27,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:23:27,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:23:27,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:23:27,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:23:27,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:23:27,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:23:27,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:23:27,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:23:27,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:23:27,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:23:27,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:23:27,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:23:27,669 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 01:23:27,694 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:23:27,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:23:27,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:23:27,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:23:27,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:23:27,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:23:27,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:23:27,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:23:27,697 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:23:27,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:23:27,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:23:27,699 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:23:27,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:23:27,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:23:27,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:23:27,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:23:27,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:23:27,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:23:27,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:23:27,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:23:27,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:23:27,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:23:27,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:23:27,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:23:27,700 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:23:27,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:23:27,701 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:23:27,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:23:27,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:23:27,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:23:27,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:23:27,964 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:23:27,964 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:23:27,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2023-03-31 01:23:29,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:23:29,333 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:23:29,334 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2023-03-31 01:23:29,346 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8c3006d/c60479279c5546dd905ad45a99fc25ee/FLAGb29737705 [2023-03-31 01:23:29,365 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8c3006d/c60479279c5546dd905ad45a99fc25ee [2023-03-31 01:23:29,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:23:29,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:23:29,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:23:29,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:23:29,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:23:29,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d8d7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29, skipping insertion in model container [2023-03-31 01:23:29,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:23:29,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:23:29,532 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/systemc/mem_slave_tlm.5.cil.c[646,659] [2023-03-31 01:23:29,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:23:29,652 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:23:29,663 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/systemc/mem_slave_tlm.5.cil.c[646,659] [2023-03-31 01:23:29,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:23:29,728 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:23:29,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29 WrapperNode [2023-03-31 01:23:29,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:23:29,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:23:29,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:23:29,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:23:29,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:23:29,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:23:29,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:23:29,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:23:29,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (1/1) ... [2023-03-31 01:23:29,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:23:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:23:29,852 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 01:23:29,855 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 01:23:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:23:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:23:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-03-31 01:23:29,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:23:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2023-03-31 01:23:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:23:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:23:29,986 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:23:29,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:23:30,628 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:23:30,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:23:30,644 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-03-31 01:23:30,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:23:30 BoogieIcfgContainer [2023-03-31 01:23:30,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:23:30,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:23:30,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:23:30,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:23:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:23:29" (1/3) ... [2023-03-31 01:23:30,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25eebce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:23:30, skipping insertion in model container [2023-03-31 01:23:30,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:29" (2/3) ... [2023-03-31 01:23:30,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25eebce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:23:30, skipping insertion in model container [2023-03-31 01:23:30,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:23:30" (3/3) ... [2023-03-31 01:23:30,656 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2023-03-31 01:23:30,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:23:30,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:23:30,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:23:30,750 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;@10d0a38, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:23:30,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:23:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 306 states, 282 states have (on average 1.822695035460993) internal successors, (514), 290 states have internal predecessors, (514), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 01:23:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-03-31 01:23:30,774 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:30,775 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] [2023-03-31 01:23:30,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:30,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1451960307, now seen corresponding path program 1 times [2023-03-31 01:23:30,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:30,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437392249] [2023-03-31 01:23:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:30,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:31,447 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 01:23:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437392249] [2023-03-31 01:23:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437392249] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:31,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:31,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049291030] [2023-03-31 01:23:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:31,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:31,512 INFO L87 Difference]: Start difference. First operand has 306 states, 282 states have (on average 1.822695035460993) internal successors, (514), 290 states have internal predecessors, (514), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:33,253 INFO L93 Difference]: Finished difference Result 891 states and 1591 transitions. [2023-03-31 01:23:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:33,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-03-31 01:23:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:33,275 INFO L225 Difference]: With dead ends: 891 [2023-03-31 01:23:33,276 INFO L226 Difference]: Without dead ends: 582 [2023-03-31 01:23:33,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:33,289 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 506 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:33,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 626 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:23:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-03-31 01:23:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 508. [2023-03-31 01:23:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 475 states have (on average 1.583157894736842) internal successors, (752), 486 states have internal predecessors, (752), 18 states have call successors, (18), 14 states have call predecessors, (18), 14 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2023-03-31 01:23:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 788 transitions. [2023-03-31 01:23:33,453 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 788 transitions. Word has length 39 [2023-03-31 01:23:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:33,454 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 788 transitions. [2023-03-31 01:23:33,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 788 transitions. [2023-03-31 01:23:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 01:23:33,463 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:33,463 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] [2023-03-31 01:23:33,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:23:33,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:33,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1480087291, now seen corresponding path program 1 times [2023-03-31 01:23:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119561487] [2023-03-31 01:23:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:33,743 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 01:23:33,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:33,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119561487] [2023-03-31 01:23:33,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119561487] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:33,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:33,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268899790] [2023-03-31 01:23:33,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:33,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:33,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:33,748 INFO L87 Difference]: Start difference. First operand 508 states and 788 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:35,397 INFO L93 Difference]: Finished difference Result 1403 states and 2199 transitions. [2023-03-31 01:23:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-03-31 01:23:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:35,407 INFO L225 Difference]: With dead ends: 1403 [2023-03-31 01:23:35,411 INFO L226 Difference]: Without dead ends: 915 [2023-03-31 01:23:35,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:35,420 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 510 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:35,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 879 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:23:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-03-31 01:23:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 813. [2023-03-31 01:23:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 765 states have (on average 1.6130718954248366) internal successors, (1234), 779 states have internal predecessors, (1234), 26 states have call successors, (26), 22 states have call predecessors, (26), 21 states have return successors, (30), 18 states have call predecessors, (30), 19 states have call successors, (30) [2023-03-31 01:23:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1290 transitions. [2023-03-31 01:23:35,532 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1290 transitions. Word has length 53 [2023-03-31 01:23:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:35,532 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1290 transitions. [2023-03-31 01:23:35,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1290 transitions. [2023-03-31 01:23:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:23:35,535 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:35,535 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] [2023-03-31 01:23:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:23:35,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:35,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash -518471974, now seen corresponding path program 1 times [2023-03-31 01:23:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202428324] [2023-03-31 01:23:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:35,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:35,847 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 01:23:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202428324] [2023-03-31 01:23:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202428324] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151895205] [2023-03-31 01:23:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:35,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:35,850 INFO L87 Difference]: Start difference. First operand 813 states and 1290 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:37,300 INFO L93 Difference]: Finished difference Result 2170 states and 3464 transitions. [2023-03-31 01:23:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:23:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:37,308 INFO L225 Difference]: With dead ends: 2170 [2023-03-31 01:23:37,309 INFO L226 Difference]: Without dead ends: 1388 [2023-03-31 01:23:37,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:37,312 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 586 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:37,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 696 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:23:37,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2023-03-31 01:23:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1255. [2023-03-31 01:23:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1184 states have (on average 1.6013513513513513) internal successors, (1896), 1209 states have internal predecessors, (1896), 36 states have call successors, (36), 32 states have call predecessors, (36), 34 states have return successors, (78), 27 states have call predecessors, (78), 29 states have call successors, (78) [2023-03-31 01:23:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 2010 transitions. [2023-03-31 01:23:37,470 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 2010 transitions. Word has length 54 [2023-03-31 01:23:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:37,470 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 2010 transitions. [2023-03-31 01:23:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 2010 transitions. [2023-03-31 01:23:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:23:37,473 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:37,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:23:37,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:37,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1312784990, now seen corresponding path program 1 times [2023-03-31 01:23:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005530414] [2023-03-31 01:23:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-31 01:23:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005530414] [2023-03-31 01:23:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005530414] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366804487] [2023-03-31 01:23:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:37,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:37,733 INFO L87 Difference]: Start difference. First operand 1255 states and 2010 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:39,122 INFO L93 Difference]: Finished difference Result 2599 states and 4128 transitions. [2023-03-31 01:23:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:23:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2023-03-31 01:23:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:39,129 INFO L225 Difference]: With dead ends: 2599 [2023-03-31 01:23:39,129 INFO L226 Difference]: Without dead ends: 1364 [2023-03-31 01:23:39,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:23:39,133 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 619 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:39,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 468 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:23:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2023-03-31 01:23:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1244. [2023-03-31 01:23:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1173 states have (on average 1.6018755328218244) internal successors, (1879), 1198 states have internal predecessors, (1879), 36 states have call successors, (36), 32 states have call predecessors, (36), 34 states have return successors, (78), 27 states have call predecessors, (78), 29 states have call successors, (78) [2023-03-31 01:23:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1993 transitions. [2023-03-31 01:23:39,309 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1993 transitions. Word has length 61 [2023-03-31 01:23:39,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:39,310 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1993 transitions. [2023-03-31 01:23:39,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:39,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1993 transitions. [2023-03-31 01:23:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:23:39,311 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:39,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:23:39,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:39,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash 868884316, now seen corresponding path program 1 times [2023-03-31 01:23:39,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:39,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468314347] [2023-03-31 01:23:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:39,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468314347] [2023-03-31 01:23:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468314347] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:39,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:39,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:23:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153467532] [2023-03-31 01:23:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:23:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:23:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:23:39,692 INFO L87 Difference]: Start difference. First operand 1244 states and 1993 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:45,349 INFO L93 Difference]: Finished difference Result 6714 states and 11674 transitions. [2023-03-31 01:23:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-31 01:23:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2023-03-31 01:23:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:45,384 INFO L225 Difference]: With dead ends: 6714 [2023-03-31 01:23:45,384 INFO L226 Difference]: Without dead ends: 5490 [2023-03-31 01:23:45,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:23:45,409 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 2587 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 4360 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2597 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 4360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:45,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2597 Valid, 2731 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 4360 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-31 01:23:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5490 states. [2023-03-31 01:23:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5490 to 4616. [2023-03-31 01:23:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4257 states have (on average 1.5677707305614281) internal successors, (6674), 4436 states have internal predecessors, (6674), 198 states have call successors, (198), 128 states have call predecessors, (198), 160 states have return successors, (1071), 179 states have call predecessors, (1071), 191 states have call successors, (1071) [2023-03-31 01:23:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 7943 transitions. [2023-03-31 01:23:46,256 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 7943 transitions. Word has length 61 [2023-03-31 01:23:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:46,257 INFO L495 AbstractCegarLoop]: Abstraction has 4616 states and 7943 transitions. [2023-03-31 01:23:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 7943 transitions. [2023-03-31 01:23:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-03-31 01:23:46,258 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:46,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:46,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:23:46,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:46,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash 937003395, now seen corresponding path program 1 times [2023-03-31 01:23:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:46,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020043764] [2023-03-31 01:23:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:46,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:46,529 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 01:23:46,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020043764] [2023-03-31 01:23:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020043764] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:46,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:46,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:46,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361107082] [2023-03-31 01:23:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:46,532 INFO L87 Difference]: Start difference. First operand 4616 states and 7943 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:48,658 INFO L93 Difference]: Finished difference Result 11702 states and 21553 transitions. [2023-03-31 01:23:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2023-03-31 01:23:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:48,716 INFO L225 Difference]: With dead ends: 11702 [2023-03-31 01:23:48,717 INFO L226 Difference]: Without dead ends: 7106 [2023-03-31 01:23:48,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:48,795 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 606 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:48,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 591 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:23:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2023-03-31 01:23:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 6434. [2023-03-31 01:23:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 5891 states have (on average 1.5550840264810728) internal successors, (9161), 6131 states have internal predecessors, (9161), 311 states have call successors, (311), 208 states have call predecessors, (311), 231 states have return successors, (1972), 242 states have call predecessors, (1972), 304 states have call successors, (1972) [2023-03-31 01:23:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 11444 transitions. [2023-03-31 01:23:50,186 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 11444 transitions. Word has length 63 [2023-03-31 01:23:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:50,187 INFO L495 AbstractCegarLoop]: Abstraction has 6434 states and 11444 transitions. [2023-03-31 01:23:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 11444 transitions. [2023-03-31 01:23:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-03-31 01:23:50,191 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:50,191 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] [2023-03-31 01:23:50,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:23:50,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:50,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1830179444, now seen corresponding path program 1 times [2023-03-31 01:23:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:50,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379007496] [2023-03-31 01:23:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,490 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 01:23:50,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:50,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379007496] [2023-03-31 01:23:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379007496] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:50,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528651072] [2023-03-31 01:23:50,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:50,493 INFO L87 Difference]: Start difference. First operand 6434 states and 11444 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:23:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:53,601 INFO L93 Difference]: Finished difference Result 15859 states and 31075 transitions. [2023-03-31 01:23:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:23:53,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2023-03-31 01:23:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:53,672 INFO L225 Difference]: With dead ends: 15859 [2023-03-31 01:23:53,672 INFO L226 Difference]: Without dead ends: 9445 [2023-03-31 01:23:53,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:23:53,745 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 417 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:53,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 890 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 01:23:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9445 states. [2023-03-31 01:23:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9445 to 8806. [2023-03-31 01:23:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 8049 states have (on average 1.5148465647906573) internal successors, (12193), 8379 states have internal predecessors, (12193), 432 states have call successors, (432), 291 states have call predecessors, (432), 324 states have return successors, (3422), 335 states have call predecessors, (3422), 425 states have call successors, (3422) [2023-03-31 01:23:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 16047 transitions. [2023-03-31 01:23:55,666 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 16047 transitions. Word has length 77 [2023-03-31 01:23:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:55,666 INFO L495 AbstractCegarLoop]: Abstraction has 8806 states and 16047 transitions. [2023-03-31 01:23:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:23:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 16047 transitions. [2023-03-31 01:23:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-03-31 01:23:55,670 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:55,670 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] [2023-03-31 01:23:55,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:23:55,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:55,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2079807008, now seen corresponding path program 1 times [2023-03-31 01:23:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:55,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890573785] [2023-03-31 01:23:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:56,070 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 01:23:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:56,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890573785] [2023-03-31 01:23:56,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890573785] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:56,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:56,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189762000] [2023-03-31 01:23:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:56,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:56,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:56,072 INFO L87 Difference]: Start difference. First operand 8806 states and 16047 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:58,210 INFO L93 Difference]: Finished difference Result 17895 states and 34789 transitions. [2023-03-31 01:23:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:23:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-03-31 01:23:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:58,266 INFO L225 Difference]: With dead ends: 17895 [2023-03-31 01:23:58,267 INFO L226 Difference]: Without dead ends: 9109 [2023-03-31 01:23:58,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:23:58,332 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 623 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:58,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 448 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:23:58,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9109 states. [2023-03-31 01:23:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9109 to 8625. [2023-03-31 01:23:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8625 states, 7868 states have (on average 1.49644128113879) internal successors, (11774), 8198 states have internal predecessors, (11774), 432 states have call successors, (432), 291 states have call predecessors, (432), 324 states have return successors, (3415), 335 states have call predecessors, (3415), 425 states have call successors, (3415) [2023-03-31 01:23:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8625 states to 8625 states and 15621 transitions. [2023-03-31 01:23:59,667 INFO L78 Accepts]: Start accepts. Automaton has 8625 states and 15621 transitions. Word has length 79 [2023-03-31 01:23:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:59,667 INFO L495 AbstractCegarLoop]: Abstraction has 8625 states and 15621 transitions. [2023-03-31 01:23:59,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8625 states and 15621 transitions. [2023-03-31 01:23:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-03-31 01:23:59,675 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:59,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:59,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:23:59,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:59,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash 658955275, now seen corresponding path program 1 times [2023-03-31 01:23:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:59,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121090526] [2023-03-31 01:23:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:59,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:59,945 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 01:23:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121090526] [2023-03-31 01:23:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121090526] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:59,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:59,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:59,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396705514] [2023-03-31 01:23:59,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:59,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:59,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:59,947 INFO L87 Difference]: Start difference. First operand 8625 states and 15621 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:24:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:02,627 INFO L93 Difference]: Finished difference Result 15927 states and 29736 transitions. [2023-03-31 01:24:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:24:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-03-31 01:24:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:02,671 INFO L225 Difference]: With dead ends: 15927 [2023-03-31 01:24:02,671 INFO L226 Difference]: Without dead ends: 7322 [2023-03-31 01:24:02,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:24:02,748 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 260 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:02,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 882 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:24:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2023-03-31 01:24:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 6629. [2023-03-31 01:24:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6629 states, 6106 states have (on average 1.5034392400917131) internal successors, (9180), 6324 states have internal predecessors, (9180), 300 states have call successors, (300), 210 states have call predecessors, (300), 222 states have return successors, (1869), 220 states have call predecessors, (1869), 293 states have call successors, (1869) [2023-03-31 01:24:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 11349 transitions. [2023-03-31 01:24:03,804 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 11349 transitions. Word has length 80 [2023-03-31 01:24:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:03,804 INFO L495 AbstractCegarLoop]: Abstraction has 6629 states and 11349 transitions. [2023-03-31 01:24:03,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:24:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 11349 transitions. [2023-03-31 01:24:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-03-31 01:24:03,806 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:03,806 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] [2023-03-31 01:24:03,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:24:03,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:03,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1850205801, now seen corresponding path program 1 times [2023-03-31 01:24:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400357640] [2023-03-31 01:24:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:03,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:04,181 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 01:24:04,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:04,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400357640] [2023-03-31 01:24:04,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400357640] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:04,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:24:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299418692] [2023-03-31 01:24:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:04,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:24:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:24:04,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:24:04,184 INFO L87 Difference]: Start difference. First operand 6629 states and 11349 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:24:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:07,194 INFO L93 Difference]: Finished difference Result 18718 states and 37690 transitions. [2023-03-31 01:24:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:24:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2023-03-31 01:24:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:07,288 INFO L225 Difference]: With dead ends: 18718 [2023-03-31 01:24:07,288 INFO L226 Difference]: Without dead ends: 12106 [2023-03-31 01:24:07,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:24:07,380 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 909 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:07,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1004 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:24:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2023-03-31 01:24:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 11364. [2023-03-31 01:24:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 10423 states have (on average 1.4747193706226613) internal successors, (15371), 10833 states have internal predecessors, (15371), 555 states have call successors, (555), 379 states have call predecessors, (555), 385 states have return successors, (6217), 364 states have call predecessors, (6217), 548 states have call successors, (6217) [2023-03-31 01:24:09,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 22143 transitions. [2023-03-31 01:24:09,319 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 22143 transitions. Word has length 82 [2023-03-31 01:24:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:09,320 INFO L495 AbstractCegarLoop]: Abstraction has 11364 states and 22143 transitions. [2023-03-31 01:24:09,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:24:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 22143 transitions. [2023-03-31 01:24:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-03-31 01:24:09,322 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:09,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:09,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:24:09,322 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:09,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2003023634, now seen corresponding path program 1 times [2023-03-31 01:24:09,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:09,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689730954] [2023-03-31 01:24:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:09,710 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 01:24:09,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689730954] [2023-03-31 01:24:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689730954] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:09,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:24:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300139556] [2023-03-31 01:24:09,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:09,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:24:09,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:24:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:24:09,712 INFO L87 Difference]: Start difference. First operand 11364 states and 22143 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:24:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:15,533 INFO L93 Difference]: Finished difference Result 33367 states and 79481 transitions. [2023-03-31 01:24:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2023-03-31 01:24:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:15,742 INFO L225 Difference]: With dead ends: 33367 [2023-03-31 01:24:15,742 INFO L226 Difference]: Without dead ends: 22116 [2023-03-31 01:24:15,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:24:15,953 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1874 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:15,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 2156 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:24:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22116 states.