/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:07:00,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:07:00,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:07:00,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:07:00,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:07:00,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:07:00,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:07:00,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:07:00,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:07:00,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:07:00,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:07:00,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:07:00,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:07:00,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:07:00,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:07:00,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:07:00,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:07:00,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:07:00,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:07:00,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:07:00,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:07:00,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:07:00,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:07:00,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:07:00,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:07:00,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:07:00,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:07:00,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:07:00,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:07:00,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:07:00,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:07:00,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:07:00,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:07:00,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:07:00,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:07:00,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:07:00,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:07:00,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:07:00,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:07:00,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:07:00,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:07:00,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:07:00,415 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:07:00,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:07:00,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:07:00,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:07:00,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:07:00,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:07:00,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:07:00,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:07:00,416 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:07:00,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:07:00,416 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:07:00,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:07:00,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:07:00,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:07:00,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:07:00,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:07:00,418 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:07:00,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:07:00,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:07:00,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:07:00,627 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:07:00,628 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:07:00,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-04-02 05:07:01,738 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:07:01,970 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:07:01,971 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-04-02 05:07:02,029 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754238ce4/afaed682d57747fb84cad93b8d6b86e7/FLAGa8fbdaf8d [2023-04-02 05:07:02,039 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754238ce4/afaed682d57747fb84cad93b8d6b86e7 [2023-04-02 05:07:02,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:07:02,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:07:02,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:07:02,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:07:02,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:07:02,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3850ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02, skipping insertion in model container [2023-04-02 05:07:02,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:07:02,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:07:02,296 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.4.ufo.UNBOUNDED.pals.c[61125,61138] [2023-04-02 05:07:02,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:07:02,308 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:07:02,447 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.4.ufo.UNBOUNDED.pals.c[61125,61138] [2023-04-02 05:07:02,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:07:02,459 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:07:02,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02 WrapperNode [2023-04-02 05:07:02,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:07:02,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:07:02,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:07:02,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:07:02,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:07:02,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:07:02,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:07:02,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:07:02,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (1/1) ... [2023-04-02 05:07:02,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:07:02,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:07:02,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:07:02,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:07:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:07:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:07:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:07:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:07:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:07:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:07:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:07:02,788 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:07:02,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:07:03,961 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:07:03,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:07:03,971 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:07:03,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:07:03 BoogieIcfgContainer [2023-04-02 05:07:03,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:07:03,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:07:03,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:07:03,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:07:03,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:07:02" (1/3) ... [2023-04-02 05:07:03,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca0cd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:07:03, skipping insertion in model container [2023-04-02 05:07:03,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:02" (2/3) ... [2023-04-02 05:07:03,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca0cd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:07:03, skipping insertion in model container [2023-04-02 05:07:03,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:07:03" (3/3) ... [2023-04-02 05:07:03,979 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-04-02 05:07:03,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:07:03,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:07:04,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:07:04,045 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;@1482620c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:07:04,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:07:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 707 states, 683 states have (on average 1.8550512445095169) internal successors, (1267), 685 states have internal predecessors, (1267), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:07:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-02 05:07:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:07:04,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:07:04,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:07:04,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:07:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1428751554, now seen corresponding path program 1 times [2023-04-02 05:07:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:07:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153650107] [2023-04-02 05:07:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:07:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:07:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:07:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:07:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:07:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:07:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 05:07:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:07:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 05:07:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 05:07:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 05:07:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:07:06,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:07:06,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153650107] [2023-04-02 05:07:06,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153650107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:07:06,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:07:06,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:07:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065352377] [2023-04-02 05:07:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:07:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:07:06,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:07:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:07:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:07:06,081 INFO L87 Difference]: Start difference. First operand has 707 states, 683 states have (on average 1.8550512445095169) internal successors, (1267), 685 states have internal predecessors, (1267), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 14 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:07:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:07:14,655 INFO L93 Difference]: Finished difference Result 884 states and 1586 transitions. [2023-04-02 05:07:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:07:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 182 [2023-04-02 05:07:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:07:14,676 INFO L225 Difference]: With dead ends: 884 [2023-04-02 05:07:14,676 INFO L226 Difference]: Without dead ends: 727 [2023-04-02 05:07:14,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:07:14,682 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 5071 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9326 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5078 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 9430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 9326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:07:14,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5078 Valid, 144 Invalid, 9430 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [104 Valid, 9326 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-02 05:07:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-04-02 05:07:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 702. [2023-04-02 05:07:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 680 states have (on average 1.7647058823529411) internal successors, (1200), 681 states have internal predecessors, (1200), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:07:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1221 transitions. [2023-04-02 05:07:14,952 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1221 transitions. Word has length 182 [2023-04-02 05:07:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:07:14,954 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1221 transitions. [2023-04-02 05:07:14,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:07:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1221 transitions. [2023-04-02 05:07:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-04-02 05:07:14,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:07:14,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:07:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:07:14,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:07:14,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:07:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 837917016, now seen corresponding path program 1 times [2023-04-02 05:07:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:07:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908667074] [2023-04-02 05:07:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:07:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:07:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:07:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:07:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:07:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:07:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:07:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:07:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:07:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:07:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:07:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:07:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:07:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908667074] [2023-04-02 05:07:16,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908667074] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:07:16,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:07:16,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:07:16,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628757138] [2023-04-02 05:07:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:07:16,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:07:16,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:07:16,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:07:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:07:16,558 INFO L87 Difference]: Start difference. First operand 702 states and 1221 transitions. Second operand has 19 states, 19 states have (on average 11.631578947368421) internal successors, (221), 13 states have internal predecessors, (221), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:07:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:07:45,113 INFO L93 Difference]: Finished difference Result 3220 states and 5468 transitions. [2023-04-02 05:07:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-04-02 05:07:45,116 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.631578947368421) internal successors, (221), 13 states have internal predecessors, (221), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 241 [2023-04-02 05:07:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:07:45,147 INFO L225 Difference]: With dead ends: 3220 [2023-04-02 05:07:45,147 INFO L226 Difference]: Without dead ends: 3076 [2023-04-02 05:07:45,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6646 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2884, Invalid=15206, Unknown=0, NotChecked=0, Total=18090 [2023-04-02 05:07:45,153 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 11291 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 14410 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11304 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 14777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 14410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:07:45,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11304 Valid, 229 Invalid, 14777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 14410 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-04-02 05:07:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2023-04-02 05:07:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1416. [2023-04-02 05:07:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1314 states have (on average 1.751902587519026) internal successors, (2302), 1325 states have internal predecessors, (2302), 46 states have call successors, (46), 46 states have call predecessors, (46), 55 states have return successors, (79), 45 states have call predecessors, (79), 45 states have call successors, (79) [2023-04-02 05:07:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2427 transitions. [2023-04-02 05:07:45,467 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2427 transitions. Word has length 241 [2023-04-02 05:07:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:07:45,471 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2427 transitions. [2023-04-02 05:07:45,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.631578947368421) internal successors, (221), 13 states have internal predecessors, (221), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:07:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2427 transitions. [2023-04-02 05:07:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-04-02 05:07:45,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:07:45,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:07:45,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:07:45,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:07:45,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:07:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1698274088, now seen corresponding path program 1 times [2023-04-02 05:07:45,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:07:45,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937830907] [2023-04-02 05:07:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:07:45,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:07:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:07:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:07:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:07:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:07:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:07:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:07:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:07:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:07:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:07:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:07:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:07:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937830907] [2023-04-02 05:07:46,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937830907] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:07:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:07:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:07:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988377760] [2023-04-02 05:07:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:07:46,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:07:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:07:46,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:07:46,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:07:46,507 INFO L87 Difference]: Start difference. First operand 1416 states and 2427 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 6 states have internal predecessors, (222), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:07:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:07:58,378 INFO L93 Difference]: Finished difference Result 3908 states and 6593 transitions. [2023-04-02 05:07:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:07:58,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 6 states have internal predecessors, (222), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 242 [2023-04-02 05:07:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:07:58,387 INFO L225 Difference]: With dead ends: 3908 [2023-04-02 05:07:58,388 INFO L226 Difference]: Without dead ends: 3050 [2023-04-02 05:07:58,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:07:58,391 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5705 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7438 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5717 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 7438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:07:58,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5717 Valid, 139 Invalid, 7534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 7438 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-02 05:07:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2023-04-02 05:07:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2661. [2023-04-02 05:07:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2413 states have (on average 1.7384997927890593) internal successors, (4195), 2444 states have internal predecessors, (4195), 109 states have call successors, (109), 109 states have call predecessors, (109), 138 states have return successors, (210), 108 states have call predecessors, (210), 108 states have call successors, (210) [2023-04-02 05:07:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4514 transitions. [2023-04-02 05:07:58,831 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4514 transitions. Word has length 242 [2023-04-02 05:07:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:07:58,832 INFO L495 AbstractCegarLoop]: Abstraction has 2661 states and 4514 transitions. [2023-04-02 05:07:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 6 states have internal predecessors, (222), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:07:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4514 transitions. [2023-04-02 05:07:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-04-02 05:07:58,835 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:07:58,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:07:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:07:58,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:07:58,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:07:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1747112689, now seen corresponding path program 1 times [2023-04-02 05:07:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:07:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79769398] [2023-04-02 05:07:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:07:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:07:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:07:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:07:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:07:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:07:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:07:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:07:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:07:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:07:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:07:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:07:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:07:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79769398] [2023-04-02 05:07:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79769398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:07:59,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:07:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:07:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154093013] [2023-04-02 05:07:59,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:07:59,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:07:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:07:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:07:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:07:59,688 INFO L87 Difference]: Start difference. First operand 2661 states and 4514 transitions. Second operand has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 6 states have internal predecessors, (223), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:11,255 INFO L93 Difference]: Finished difference Result 14964 states and 25071 transitions. [2023-04-02 05:08:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:08:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 6 states have internal predecessors, (223), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 243 [2023-04-02 05:08:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:11,291 INFO L225 Difference]: With dead ends: 14964 [2023-04-02 05:08:11,292 INFO L226 Difference]: Without dead ends: 12861 [2023-04-02 05:08:11,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:08:11,303 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5743 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7406 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5755 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 7406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:11,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5755 Valid, 139 Invalid, 7504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 7406 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-02 05:08:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12861 states. [2023-04-02 05:08:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12861 to 10948. [2023-04-02 05:08:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10948 states, 9725 states have (on average 1.7255526992287917) internal successors, (16781), 9891 states have internal predecessors, (16781), 529 states have call successors, (529), 529 states have call predecessors, (529), 693 states have return successors, (1119), 528 states have call predecessors, (1119), 528 states have call successors, (1119) [2023-04-02 05:08:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10948 states to 10948 states and 18429 transitions. [2023-04-02 05:08:12,779 INFO L78 Accepts]: Start accepts. Automaton has 10948 states and 18429 transitions. Word has length 243 [2023-04-02 05:08:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:12,779 INFO L495 AbstractCegarLoop]: Abstraction has 10948 states and 18429 transitions. [2023-04-02 05:08:12,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 6 states have internal predecessors, (223), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:12,780 INFO L276 IsEmpty]: Start isEmpty. Operand 10948 states and 18429 transitions. [2023-04-02 05:08:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-04-02 05:08:12,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:12,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:12,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:08:12,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:12,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1231605313, now seen corresponding path program 1 times [2023-04-02 05:08:12,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:12,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318141930] [2023-04-02 05:08:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:08:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:08:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:08:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:08:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:08:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:08:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:08:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318141930] [2023-04-02 05:08:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318141930] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:08:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964101030] [2023-04-02 05:08:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:13,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:08:13,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:08:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:08:13,783 INFO L87 Difference]: Start difference. First operand 10948 states and 18429 transitions. Second operand has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 6 states have internal predecessors, (224), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:28,505 INFO L93 Difference]: Finished difference Result 72138 states and 120597 transitions. [2023-04-02 05:08:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:08:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 6 states have internal predecessors, (224), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 244 [2023-04-02 05:08:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:28,682 INFO L225 Difference]: With dead ends: 72138 [2023-04-02 05:08:28,683 INFO L226 Difference]: Without dead ends: 61748 [2023-04-02 05:08:28,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:08:28,715 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6878 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7267 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6890 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 7267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:28,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6890 Valid, 139 Invalid, 7383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 7267 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-02 05:08:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61748 states. [2023-04-02 05:08:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61748 to 52215. [2023-04-02 05:08:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52215 states, 46057 states have (on average 1.7176759233124173) internal successors, (79111), 46958 states have internal predecessors, (79111), 2629 states have call successors, (2629), 2629 states have call predecessors, (2629), 3528 states have return successors, (5976), 2628 states have call predecessors, (5976), 2628 states have call successors, (5976) [2023-04-02 05:08:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52215 states to 52215 states and 87716 transitions. [2023-04-02 05:08:35,365 INFO L78 Accepts]: Start accepts. Automaton has 52215 states and 87716 transitions. Word has length 244 [2023-04-02 05:08:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:35,367 INFO L495 AbstractCegarLoop]: Abstraction has 52215 states and 87716 transitions. [2023-04-02 05:08:35,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 6 states have internal predecessors, (224), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 52215 states and 87716 transitions. [2023-04-02 05:08:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-04-02 05:08:35,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:35,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:08:35,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:35,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1812536518, now seen corresponding path program 1 times [2023-04-02 05:08:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:35,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004318237] [2023-04-02 05:08:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:08:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:08:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:08:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:08:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:08:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:08:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:08:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:36,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:36,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004318237] [2023-04-02 05:08:36,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004318237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:36,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:36,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:08:36,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922926454] [2023-04-02 05:08:36,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:36,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:08:36,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:08:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:08:36,615 INFO L87 Difference]: Start difference. First operand 52215 states and 87716 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 6 states have internal predecessors, (225), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:09:15,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:15,809 INFO L93 Difference]: Finished difference Result 357528 states and 597411 transitions. [2023-04-02 05:09:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:09:15,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 6 states have internal predecessors, (225), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 245 [2023-04-02 05:09:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:17,203 INFO L225 Difference]: With dead ends: 357528 [2023-04-02 05:09:17,203 INFO L226 Difference]: Without dead ends: 305871 [2023-04-02 05:09:17,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:09:17,345 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7182 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 7289 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7194 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 7407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 7289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:17,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7194 Valid, 131 Invalid, 7407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 7289 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-02 05:09:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305871 states. [2023-04-02 05:09:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305871 to 258238. [2023-04-02 05:09:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258238 states, 227105 states have (on average 1.712269655005394) internal successors, (388865), 231981 states have internal predecessors, (388865), 13129 states have call successors, (13129), 13129 states have call predecessors, (13129), 18003 states have return successors, (31797), 13128 states have call predecessors, (31797), 13128 states have call successors, (31797) [2023-04-02 05:09:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258238 states to 258238 states and 433791 transitions. [2023-04-02 05:09:49,570 INFO L78 Accepts]: Start accepts. Automaton has 258238 states and 433791 transitions. Word has length 245 [2023-04-02 05:09:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:49,571 INFO L495 AbstractCegarLoop]: Abstraction has 258238 states and 433791 transitions. [2023-04-02 05:09:49,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 6 states have internal predecessors, (225), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:09:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 258238 states and 433791 transitions. [2023-04-02 05:09:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-04-02 05:09:49,579 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:49,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:09:49,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:09:49,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:49,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1639967830, now seen corresponding path program 1 times [2023-04-02 05:09:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005917313] [2023-04-02 05:09:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:09:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:09:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:09:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:09:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:09:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:09:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:09:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:09:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:50,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005917313] [2023-04-02 05:09:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005917313] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:50,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:09:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346117417] [2023-04-02 05:09:50,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:50,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:09:50,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:09:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:09:50,636 INFO L87 Difference]: Start difference. First operand 258238 states and 433791 transitions. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 6 states have internal predecessors, (226), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)