/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_lcr.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:32:37,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:32:37,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:32:37,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:32:37,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:32:37,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:32:37,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:32:37,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:32:37,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:32:37,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:32:37,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:32:37,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:32:37,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:32:37,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:32:37,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:32:37,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:32:37,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:32:37,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:32:37,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:32:37,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:32:37,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:32:37,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:32:37,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:32:37,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:32:37,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:32:37,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:32:37,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:32:37,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:32:37,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:32:37,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:32:37,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:32:37,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:32:37,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:32:37,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:32:37,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:32:37,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:32:37,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:32:37,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:32:37,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:32:37,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:32:37,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:32:37,492 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 01:32:37,510 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:32:37,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:32:37,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:32:37,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:32:37,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:32:37,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:32:37,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:32:37,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:32:37,512 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:32:37,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:32:37,512 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:32:37,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:32:37,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:32:37,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:32:37,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:32:37,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:32:37,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:32:37,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:32:37,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:32:37,515 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:32:37,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:32:37,515 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:32:37,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:32:37,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:32:37,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:32:37,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:32:37,756 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:32:37,756 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:32:37,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2023-03-31 01:32:38,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:32:39,049 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:32:39,049 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2023-03-31 01:32:39,060 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710416726/7ccae069bf0845f58765914ec3cf1150/FLAGdc1d2b8ac [2023-03-31 01:32:39,072 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710416726/7ccae069bf0845f58765914ec3cf1150 [2023-03-31 01:32:39,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:32:39,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:32:39,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:32:39,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:32:39,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:32:39,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f27bc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39, skipping insertion in model container [2023-03-31 01:32:39,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:32:39,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:32:39,268 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_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2023-03-31 01:32:39,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:32:39,278 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:32:39,322 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_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2023-03-31 01:32:39,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:32:39,346 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:32:39,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39 WrapperNode [2023-03-31 01:32:39,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:32:39,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:32:39,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:32:39,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:32:39,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:32:39,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:32:39,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:32:39,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:32:39,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (1/1) ... [2023-03-31 01:32:39,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:32:39,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:32:39,442 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 01:32:39,461 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 01:32:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:32:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:32:39,477 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:32:39,477 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:32:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:32:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:32:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:32:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:32:39,584 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:32:39,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:32:39,926 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:32:39,931 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:32:39,931 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:32:39,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:32:39 BoogieIcfgContainer [2023-03-31 01:32:39,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:32:39,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:32:39,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:32:39,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:32:39,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:32:39" (1/3) ... [2023-03-31 01:32:39,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf87036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:32:39, skipping insertion in model container [2023-03-31 01:32:39,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:32:39" (2/3) ... [2023-03-31 01:32:39,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf87036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:32:39, skipping insertion in model container [2023-03-31 01:32:39,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:32:39" (3/3) ... [2023-03-31 01:32:39,939 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2023-03-31 01:32:39,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:32:39,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:32:40,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:32:40,015 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;@52844c5a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:32:40,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:32:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 79 states have (on average 1.620253164556962) internal successors, (128), 80 states have internal predecessors, (128), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:32:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 01:32:40,026 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:40,026 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] [2023-03-31 01:32:40,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:40,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2106132907, now seen corresponding path program 1 times [2023-03-31 01:32:40,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:40,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394707234] [2023-03-31 01:32:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:32:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:32:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:32:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-03-31 01:32:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 01:32:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:40,468 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 01:32:40,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:40,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394707234] [2023-03-31 01:32:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394707234] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:40,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:40,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:32:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303112661] [2023-03-31 01:32:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:40,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:32:40,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:40,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:32:40,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:32:40,506 INFO L87 Difference]: Start difference. First operand has 99 states, 79 states have (on average 1.620253164556962) internal successors, (128), 80 states have internal predecessors, (128), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:40,964 INFO L93 Difference]: Finished difference Result 162 states and 233 transitions. [2023-03-31 01:32:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:32:40,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-03-31 01:32:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:40,974 INFO L225 Difference]: With dead ends: 162 [2023-03-31 01:32:40,974 INFO L226 Difference]: Without dead ends: 94 [2023-03-31 01:32:40,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:32:40,980 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 404 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:40,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 79 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:32:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-03-31 01:32:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-03-31 01:32:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.5921052631578947) internal successors, (121), 76 states have internal predecessors, (121), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 01:32:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 138 transitions. [2023-03-31 01:32:41,026 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 138 transitions. Word has length 48 [2023-03-31 01:32:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:41,027 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 138 transitions. [2023-03-31 01:32:41,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 138 transitions. [2023-03-31 01:32:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 01:32:41,028 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:41,028 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] [2023-03-31 01:32:41,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:32:41,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:41,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1262127405, now seen corresponding path program 1 times [2023-03-31 01:32:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125148116] [2023-03-31 01:32:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:41,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:32:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-03-31 01:32:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:32:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-03-31 01:32:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 01:32:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:41,313 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 01:32:41,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125148116] [2023-03-31 01:32:41,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125148116] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:41,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:41,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:32:41,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338488232] [2023-03-31 01:32:41,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:41,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:32:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:32:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:32:41,316 INFO L87 Difference]: Start difference. First operand 94 states and 138 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:42,028 INFO L93 Difference]: Finished difference Result 167 states and 238 transitions. [2023-03-31 01:32:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:32:42,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-03-31 01:32:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:42,030 INFO L225 Difference]: With dead ends: 167 [2023-03-31 01:32:42,030 INFO L226 Difference]: Without dead ends: 104 [2023-03-31 01:32:42,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:32:42,032 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 271 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:42,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 101 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:32:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-03-31 01:32:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2023-03-31 01:32:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 76 states have internal predecessors, (98), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 01:32:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2023-03-31 01:32:42,047 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 48 [2023-03-31 01:32:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:42,047 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2023-03-31 01:32:42,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2023-03-31 01:32:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 01:32:42,048 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:42,048 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] [2023-03-31 01:32:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:32:42,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:42,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1112853902, now seen corresponding path program 1 times [2023-03-31 01:32:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827100110] [2023-03-31 01:32:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:32:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:32:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:32:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:42,486 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 01:32:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827100110] [2023-03-31 01:32:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827100110] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:32:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396700241] [2023-03-31 01:32:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:32:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:32:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:32:42,489 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:47,250 INFO L93 Difference]: Finished difference Result 795 states and 1109 transitions. [2023-03-31 01:32:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-03-31 01:32:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2023-03-31 01:32:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:47,257 INFO L225 Difference]: With dead ends: 795 [2023-03-31 01:32:47,257 INFO L226 Difference]: Without dead ends: 738 [2023-03-31 01:32:47,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-03-31 01:32:47,271 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1415 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:47,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 301 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-03-31 01:32:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-03-31 01:32:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 385. [2023-03-31 01:32:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 299 states have (on average 1.394648829431438) internal successors, (417), 307 states have internal predecessors, (417), 39 states have call successors, (39), 39 states have call predecessors, (39), 46 states have return successors, (66), 38 states have call predecessors, (66), 38 states have call successors, (66) [2023-03-31 01:32:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 522 transitions. [2023-03-31 01:32:47,342 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 522 transitions. Word has length 70 [2023-03-31 01:32:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:47,343 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 522 transitions. [2023-03-31 01:32:47,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 522 transitions. [2023-03-31 01:32:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-31 01:32:47,348 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:47,348 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] [2023-03-31 01:32:47,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:32:47,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:47,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1468816994, now seen corresponding path program 1 times [2023-03-31 01:32:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:47,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433241060] [2023-03-31 01:32:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:32:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:32:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:32:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:47,534 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 01:32:47,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:47,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433241060] [2023-03-31 01:32:47,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433241060] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:47,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:47,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:32:47,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568147268] [2023-03-31 01:32:47,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:47,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:32:47,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:32:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:32:47,538 INFO L87 Difference]: Start difference. First operand 385 states and 522 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-03-31 01:32:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:48,205 INFO L93 Difference]: Finished difference Result 1041 states and 1448 transitions. [2023-03-31 01:32:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:32:48,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2023-03-31 01:32:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:48,211 INFO L225 Difference]: With dead ends: 1041 [2023-03-31 01:32:48,211 INFO L226 Difference]: Without dead ends: 693 [2023-03-31 01:32:48,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:32:48,214 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 326 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:48,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 96 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:32:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-03-31 01:32:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2023-03-31 01:32:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 527 states have (on average 1.3833017077798861) internal successors, (729), 541 states have internal predecessors, (729), 75 states have call successors, (75), 75 states have call predecessors, (75), 88 states have return successors, (140), 74 states have call predecessors, (140), 74 states have call successors, (140) [2023-03-31 01:32:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 944 transitions. [2023-03-31 01:32:48,296 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 944 transitions. Word has length 72 [2023-03-31 01:32:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:48,296 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 944 transitions. [2023-03-31 01:32:48,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-03-31 01:32:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 944 transitions. [2023-03-31 01:32:48,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-31 01:32:48,299 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:48,300 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] [2023-03-31 01:32:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:32:48,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:48,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 181114538, now seen corresponding path program 1 times [2023-03-31 01:32:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988799545] [2023-03-31 01:32:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:48,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:32:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:32:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:32:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:48,720 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 01:32:48,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:48,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988799545] [2023-03-31 01:32:48,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988799545] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:48,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:48,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:32:48,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579315643] [2023-03-31 01:32:48,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:48,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:32:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:32:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:32:48,725 INFO L87 Difference]: Start difference. First operand 691 states and 944 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:53,695 INFO L93 Difference]: Finished difference Result 2306 states and 3226 transitions. [2023-03-31 01:32:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-03-31 01:32:53,696 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-03-31 01:32:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:53,708 INFO L225 Difference]: With dead ends: 2306 [2023-03-31 01:32:53,708 INFO L226 Difference]: Without dead ends: 1652 [2023-03-31 01:32:53,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2769 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1485, Invalid=6705, Unknown=0, NotChecked=0, Total=8190 [2023-03-31 01:32:53,720 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1408 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:53,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 293 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-31 01:32:53,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2023-03-31 01:32:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1601. [2023-03-31 01:32:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1222 states have (on average 1.4075286415711947) internal successors, (1720), 1247 states have internal predecessors, (1720), 177 states have call successors, (177), 177 states have call predecessors, (177), 201 states have return successors, (345), 176 states have call predecessors, (345), 176 states have call successors, (345) [2023-03-31 01:32:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2242 transitions. [2023-03-31 01:32:53,886 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2242 transitions. Word has length 72 [2023-03-31 01:32:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:53,886 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2242 transitions. [2023-03-31 01:32:53,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2242 transitions. [2023-03-31 01:32:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-03-31 01:32:53,888 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:53,888 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] [2023-03-31 01:32:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:32:53,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:53,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1278725278, now seen corresponding path program 1 times [2023-03-31 01:32:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863114803] [2023-03-31 01:32:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:32:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:32:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:32:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:54,110 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 01:32:54,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:54,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863114803] [2023-03-31 01:32:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863114803] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:54,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:54,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:32:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477326145] [2023-03-31 01:32:54,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:54,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:32:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:32:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:32:54,112 INFO L87 Difference]: Start difference. First operand 1601 states and 2242 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:55,129 INFO L93 Difference]: Finished difference Result 3694 states and 5191 transitions. [2023-03-31 01:32:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:32:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2023-03-31 01:32:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:55,147 INFO L225 Difference]: With dead ends: 3694 [2023-03-31 01:32:55,147 INFO L226 Difference]: Without dead ends: 2130 [2023-03-31 01:32:55,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:32:55,152 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 718 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:55,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 99 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:32:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2023-03-31 01:32:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2126. [2023-03-31 01:32:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1611 states have (on average 1.399130974549969) internal successors, (2254), 1654 states have internal predecessors, (2254), 236 states have call successors, (236), 236 states have call predecessors, (236), 278 states have return successors, (471), 235 states have call predecessors, (471), 235 states have call successors, (471) [2023-03-31 01:32:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2961 transitions. [2023-03-31 01:32:55,398 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2961 transitions. Word has length 73 [2023-03-31 01:32:55,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:55,398 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 2961 transitions. [2023-03-31 01:32:55,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 01:32:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2961 transitions. [2023-03-31 01:32:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-03-31 01:32:55,400 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:55,400 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] [2023-03-31 01:32:55,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:32:55,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:55,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1368817057, now seen corresponding path program 1 times [2023-03-31 01:32:55,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:55,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702956267] [2023-03-31 01:32:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:55,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:32:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:32:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:32:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:55,842 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 01:32:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702956267] [2023-03-31 01:32:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702956267] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:55,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:55,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-03-31 01:32:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335970256] [2023-03-31 01:32:55,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:55,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-31 01:32:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-31 01:32:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:32:55,845 INFO L87 Difference]: Start difference. First operand 2126 states and 2961 transitions. Second operand has 17 states, 16 states have (on average 3.5625) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-03-31 01:32:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:57,202 INFO L93 Difference]: Finished difference Result 2322 states and 3367 transitions. [2023-03-31 01:32:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 01:32:57,203 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2023-03-31 01:32:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:57,212 INFO L225 Difference]: With dead ends: 2322 [2023-03-31 01:32:57,212 INFO L226 Difference]: Without dead ends: 2320 [2023-03-31 01:32:57,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:32:57,215 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 186 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:57,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 284 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:32:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2023-03-31 01:32:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2162. [2023-03-31 01:32:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1635 states have (on average 1.3889908256880734) internal successors, (2271), 1682 states have internal predecessors, (2271), 240 states have call successors, (240), 240 states have call predecessors, (240), 286 states have return successors, (483), 239 states have call predecessors, (483), 239 states have call successors, (483) [2023-03-31 01:32:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2994 transitions. [2023-03-31 01:32:57,454 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2994 transitions. Word has length 73 [2023-03-31 01:32:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:57,455 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 2994 transitions. [2023-03-31 01:32:57,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-03-31 01:32:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2994 transitions. [2023-03-31 01:32:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:32:57,457 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:57,457 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] [2023-03-31 01:32:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:32:57,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:57,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1672257978, now seen corresponding path program 1 times [2023-03-31 01:32:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672698002] [2023-03-31 01:32:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-03-31 01:32:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-03-31 01:32:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:32:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-31 01:32:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:32:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672698002] [2023-03-31 01:32:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672698002] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:57,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:57,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:32:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673141211] [2023-03-31 01:32:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:32:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:32:57,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:32:57,690 INFO L87 Difference]: Start difference. First operand 2162 states and 2994 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:32:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:32:59,171 INFO L93 Difference]: Finished difference Result 4341 states and 6062 transitions. [2023-03-31 01:32:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:32:59,172 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-03-31 01:32:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:32:59,182 INFO L225 Difference]: With dead ends: 4341 [2023-03-31 01:32:59,182 INFO L226 Difference]: Without dead ends: 2717 [2023-03-31 01:32:59,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:32:59,186 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 863 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:32:59,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 76 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:32:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2023-03-31 01:32:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2417. [2023-03-31 01:32:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 1829 states have (on average 1.4007654455986878) internal successors, (2562), 1888 states have internal predecessors, (2562), 265 states have call successors, (265), 265 states have call predecessors, (265), 322 states have return successors, (536), 263 states have call predecessors, (536), 264 states have call successors, (536) [2023-03-31 01:32:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3363 transitions. [2023-03-31 01:32:59,439 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3363 transitions. Word has length 74 [2023-03-31 01:32:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:32:59,440 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3363 transitions. [2023-03-31 01:32:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:32:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3363 transitions. [2023-03-31 01:32:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:32:59,441 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:32:59,441 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] [2023-03-31 01:32:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:32:59,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:32:59,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:32:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1118865834, now seen corresponding path program 1 times [2023-03-31 01:32:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:32:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240513437] [2023-03-31 01:32:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:32:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:32:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:32:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:32:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:32:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:32:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-03-31 01:32:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:32:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-31 01:32:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:32:59,678 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 01:32:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:32:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240513437] [2023-03-31 01:32:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240513437] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:32:59,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:32:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:32:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801414090] [2023-03-31 01:32:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:32:59,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:32:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:32:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:32:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:32:59,680 INFO L87 Difference]: Start difference. First operand 2417 states and 3363 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:33:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:01,308 INFO L93 Difference]: Finished difference Result 5898 states and 8177 transitions. [2023-03-31 01:33:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:33:01,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-03-31 01:33:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:01,320 INFO L225 Difference]: With dead ends: 5898 [2023-03-31 01:33:01,321 INFO L226 Difference]: Without dead ends: 3524 [2023-03-31 01:33:01,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:33:01,327 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 703 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:01,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 77 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:33:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2023-03-31 01:33:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 2428. [2023-03-31 01:33:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1836 states have (on average 1.3992374727668846) internal successors, (2569), 1897 states have internal predecessors, (2569), 266 states have call successors, (266), 266 states have call predecessors, (266), 325 states have return successors, (538), 264 states have call predecessors, (538), 265 states have call successors, (538) [2023-03-31 01:33:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3373 transitions. [2023-03-31 01:33:01,600 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3373 transitions. Word has length 74 [2023-03-31 01:33:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:01,600 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 3373 transitions. [2023-03-31 01:33:01,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:33:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3373 transitions. [2023-03-31 01:33:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:33:01,602 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:01,602 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] [2023-03-31 01:33:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:33:01,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:01,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1637994938, now seen corresponding path program 1 times [2023-03-31 01:33:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:01,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182935063] [2023-03-31 01:33:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:33:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-31 01:33:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:01,858 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 01:33:01,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:01,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182935063] [2023-03-31 01:33:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182935063] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:33:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469147364] [2023-03-31 01:33:01,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:01,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:33:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:33:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:33:01,860 INFO L87 Difference]: Start difference. First operand 2428 states and 3373 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:33:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:03,328 INFO L93 Difference]: Finished difference Result 5465 states and 7534 transitions. [2023-03-31 01:33:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:33:03,329 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-03-31 01:33:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:03,341 INFO L225 Difference]: With dead ends: 5465 [2023-03-31 01:33:03,341 INFO L226 Difference]: Without dead ends: 3100 [2023-03-31 01:33:03,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:33:03,347 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 841 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:03,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 76 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:33:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2023-03-31 01:33:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2458. [2023-03-31 01:33:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 1858 states have (on average 1.3988159311087192) internal successors, (2599), 1921 states have internal predecessors, (2599), 269 states have call successors, (269), 269 states have call predecessors, (269), 330 states have return successors, (545), 267 states have call predecessors, (545), 268 states have call successors, (545) [2023-03-31 01:33:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3413 transitions. [2023-03-31 01:33:03,624 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3413 transitions. Word has length 74 [2023-03-31 01:33:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:03,624 INFO L495 AbstractCegarLoop]: Abstraction has 2458 states and 3413 transitions. [2023-03-31 01:33:03,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:33:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3413 transitions. [2023-03-31 01:33:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:33:03,625 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:03,625 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] [2023-03-31 01:33:03,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:33:03,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:03,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1129175850, now seen corresponding path program 1 times [2023-03-31 01:33:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322222336] [2023-03-31 01:33:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:33:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-03-31 01:33:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:03,874 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 01:33:03,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:03,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322222336] [2023-03-31 01:33:03,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322222336] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:03,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:03,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:33:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386734390] [2023-03-31 01:33:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:33:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:33:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:33:03,876 INFO L87 Difference]: Start difference. First operand 2458 states and 3413 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:33:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:05,449 INFO L93 Difference]: Finished difference Result 5106 states and 7006 transitions. [2023-03-31 01:33:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:33:05,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-03-31 01:33:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:05,460 INFO L225 Difference]: With dead ends: 5106 [2023-03-31 01:33:05,460 INFO L226 Difference]: Without dead ends: 2729 [2023-03-31 01:33:05,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-03-31 01:33:05,466 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 723 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:05,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 72 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:33:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2023-03-31 01:33:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2464. [2023-03-31 01:33:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1863 states have (on average 1.3977455716586151) internal successors, (2604), 1925 states have internal predecessors, (2604), 270 states have call successors, (270), 270 states have call predecessors, (270), 330 states have return successors, (545), 268 states have call predecessors, (545), 269 states have call successors, (545) [2023-03-31 01:33:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3419 transitions. [2023-03-31 01:33:05,755 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3419 transitions. Word has length 74 [2023-03-31 01:33:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:05,756 INFO L495 AbstractCegarLoop]: Abstraction has 2464 states and 3419 transitions. [2023-03-31 01:33:05,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 01:33:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3419 transitions. [2023-03-31 01:33:05,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-03-31 01:33:05,757 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:05,757 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] [2023-03-31 01:33:05,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:33:05,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:05,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2014678484, now seen corresponding path program 1 times [2023-03-31 01:33:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165586771] [2023-03-31 01:33:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:33:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:33:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-03-31 01:33:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:33:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:06,017 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 01:33:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:06,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165586771] [2023-03-31 01:33:06,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165586771] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:06,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:06,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 01:33:06,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049032297] [2023-03-31 01:33:06,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:06,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 01:33:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:06,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 01:33:06,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:33:06,019 INFO L87 Difference]: Start difference. First operand 2464 states and 3419 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-31 01:33:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:07,674 INFO L93 Difference]: Finished difference Result 5173 states and 7240 transitions. [2023-03-31 01:33:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-03-31 01:33:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2023-03-31 01:33:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:07,686 INFO L225 Difference]: With dead ends: 5173 [2023-03-31 01:33:07,687 INFO L226 Difference]: Without dead ends: 3381 [2023-03-31 01:33:07,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2023-03-31 01:33:07,691 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 988 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:07,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 115 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:33:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2023-03-31 01:33:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3237. [2023-03-31 01:33:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2449 states have (on average 1.3977133523887302) internal successors, (3423), 2532 states have internal predecessors, (3423), 353 states have call successors, (353), 353 states have call predecessors, (353), 434 states have return successors, (706), 351 states have call predecessors, (706), 352 states have call successors, (706) [2023-03-31 01:33:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4482 transitions. [2023-03-31 01:33:08,084 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4482 transitions. Word has length 75 [2023-03-31 01:33:08,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:08,085 INFO L495 AbstractCegarLoop]: Abstraction has 3237 states and 4482 transitions. [2023-03-31 01:33:08,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-31 01:33:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4482 transitions. [2023-03-31 01:33:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-03-31 01:33:08,087 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:08,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-03-31 01:33:08,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:33:08,088 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:08,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1976511931, now seen corresponding path program 1 times [2023-03-31 01:33:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:08,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168427261] [2023-03-31 01:33:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:33:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:33:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:33:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:33:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-03-31 01:33:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-03-31 01:33:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:33:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:33:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 01:33:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168427261] [2023-03-31 01:33:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168427261] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:33:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201325294] [2023-03-31 01:33:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:08,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:33:08,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:33:08,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:33:08,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:33:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:08,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 17 conjunts are in the unsatisfiable core [2023-03-31 01:33:08,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:33:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 01:33:09,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:33:09,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201325294] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:09,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:33:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-03-31 01:33:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770956074] [2023-03-31 01:33:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 01:33:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 01:33:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:33:09,245 INFO L87 Difference]: Start difference. First operand 3237 states and 4482 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 4 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:33:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:10,410 INFO L93 Difference]: Finished difference Result 5594 states and 7802 transitions. [2023-03-31 01:33:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:33:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 4 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2023-03-31 01:33:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:10,426 INFO L225 Difference]: With dead ends: 5594 [2023-03-31 01:33:10,426 INFO L226 Difference]: Without dead ends: 4953 [2023-03-31 01:33:10,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2023-03-31 01:33:10,430 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 708 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:10,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 394 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:33:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2023-03-31 01:33:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4945. [2023-03-31 01:33:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 3744 states have (on average 1.4030448717948718) internal successors, (5253), 3858 states have internal predecessors, (5253), 544 states have call successors, (544), 544 states have call predecessors, (544), 656 states have return successors, (1095), 542 states have call predecessors, (1095), 543 states have call successors, (1095) [2023-03-31 01:33:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 6892 transitions. [2023-03-31 01:33:10,991 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 6892 transitions. Word has length 112 [2023-03-31 01:33:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:10,991 INFO L495 AbstractCegarLoop]: Abstraction has 4945 states and 6892 transitions. [2023-03-31 01:33:10,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 4 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:33:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 6892 transitions. [2023-03-31 01:33:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-03-31 01:33:10,993 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:10,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-03-31 01:33:11,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 01:33:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-03-31 01:33:11,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:11,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:11,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1765063221, now seen corresponding path program 1 times [2023-03-31 01:33:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035652663] [2023-03-31 01:33:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:33:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:33:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:33:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:33:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-31 01:33:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-03-31 01:33:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:33:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:33:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 01:33:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035652663] [2023-03-31 01:33:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035652663] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:33:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824825643] [2023-03-31 01:33:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:11,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:33:11,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:33:11,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:33:11,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 01:33:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:11,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 17 conjunts are in the unsatisfiable core [2023-03-31 01:33:11,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:33:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 01:33:12,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:33:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824825643] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:12,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:33:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2023-03-31 01:33:12,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135095284] [2023-03-31 01:33:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:12,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:33:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:12,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:33:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:33:12,302 INFO L87 Difference]: Start difference. First operand 4945 states and 6892 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:33:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:13,558 INFO L93 Difference]: Finished difference Result 7999 states and 11166 transitions. [2023-03-31 01:33:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:33:13,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2023-03-31 01:33:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:13,580 INFO L225 Difference]: With dead ends: 7999 [2023-03-31 01:33:13,580 INFO L226 Difference]: Without dead ends: 6444 [2023-03-31 01:33:13,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:33:13,584 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 558 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:13,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 364 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:33:13,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2023-03-31 01:33:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 6424. [2023-03-31 01:33:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6424 states, 4866 states have (on average 1.4038224414303329) internal successors, (6831), 5011 states have internal predecessors, (6831), 707 states have call successors, (707), 707 states have call predecessors, (707), 850 states have return successors, (1426), 705 states have call predecessors, (1426), 706 states have call successors, (1426) [2023-03-31 01:33:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 8964 transitions. [2023-03-31 01:33:14,234 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 8964 transitions. Word has length 112 [2023-03-31 01:33:14,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:14,234 INFO L495 AbstractCegarLoop]: Abstraction has 6424 states and 8964 transitions. [2023-03-31 01:33:14,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:33:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 8964 transitions. [2023-03-31 01:33:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-03-31 01:33:14,237 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:14,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-03-31 01:33:14,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 01:33:14,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-31 01:33:14,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:14,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2010774971, now seen corresponding path program 1 times [2023-03-31 01:33:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:14,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660670080] [2023-03-31 01:33:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:33:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:33:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:33:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:33:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-31 01:33:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:33:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:33:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:33:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 01:33:14,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660670080] [2023-03-31 01:33:14,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660670080] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:33:14,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995584042] [2023-03-31 01:33:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:14,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:33:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:33:14,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:33:14,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 01:33:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:14,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 17 conjunts are in the unsatisfiable core [2023-03-31 01:33:14,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:33:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 01:33:15,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:33:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995584042] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:33:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-03-31 01:33:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244584057] [2023-03-31 01:33:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:33:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:33:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:33:15,408 INFO L87 Difference]: Start difference. First operand 6424 states and 8964 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:33:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:16,440 INFO L93 Difference]: Finished difference Result 10157 states and 14192 transitions. [2023-03-31 01:33:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:33:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2023-03-31 01:33:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:16,466 INFO L225 Difference]: With dead ends: 10157 [2023-03-31 01:33:16,467 INFO L226 Difference]: Without dead ends: 7052 [2023-03-31 01:33:16,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:33:16,474 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 655 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:16,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 240 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:33:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7052 states. [2023-03-31 01:33:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7052 to 7046. [2023-03-31 01:33:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 5340 states have (on average 1.4037453183520598) internal successors, (7496), 5495 states have internal predecessors, (7496), 776 states have call successors, (776), 776 states have call predecessors, (776), 929 states have return successors, (1564), 774 states have call predecessors, (1564), 775 states have call successors, (1564) [2023-03-31 01:33:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 9836 transitions. [2023-03-31 01:33:17,263 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 9836 transitions. Word has length 112 [2023-03-31 01:33:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:17,264 INFO L495 AbstractCegarLoop]: Abstraction has 7046 states and 9836 transitions. [2023-03-31 01:33:17,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:33:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 9836 transitions. [2023-03-31 01:33:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-03-31 01:33:17,267 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:17,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-03-31 01:33:17,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 01:33:17,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:33:17,476 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:17,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1775373237, now seen corresponding path program 1 times [2023-03-31 01:33:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:17,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448704312] [2023-03-31 01:33:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:33:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:33:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:33:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:33:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-03-31 01:33:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:33:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-31 01:33:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:33:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-31 01:33:17,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:17,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448704312] [2023-03-31 01:33:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448704312] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:17,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:17,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:33:17,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346376429] [2023-03-31 01:33:17,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:17,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:33:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:17,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:33:17,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:33:17,905 INFO L87 Difference]: Start difference. First operand 7046 states and 9836 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 11 states have internal predecessors, (72), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:33:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:24,114 INFO L93 Difference]: Finished difference Result 14789 states and 20792 transitions. [2023-03-31 01:33:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-03-31 01:33:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 11 states have internal predecessors, (72), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2023-03-31 01:33:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:24,146 INFO L225 Difference]: With dead ends: 14789 [2023-03-31 01:33:24,146 INFO L226 Difference]: Without dead ends: 9719 [2023-03-31 01:33:24,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4125 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1809, Invalid=9747, Unknown=0, NotChecked=0, Total=11556 [2023-03-31 01:33:24,160 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1138 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3801 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:24,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 413 Invalid, 3921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3801 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-31 01:33:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2023-03-31 01:33:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 9511. [2023-03-31 01:33:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9511 states, 7208 states have (on average 1.4014983351831298) internal successors, (10102), 7398 states have internal predecessors, (10102), 1057 states have call successors, (1057), 1057 states have call predecessors, (1057), 1245 states have return successors, (2117), 1055 states have call predecessors, (2117), 1056 states have call successors, (2117) [2023-03-31 01:33:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9511 states to 9511 states and 13276 transitions. [2023-03-31 01:33:25,185 INFO L78 Accepts]: Start accepts. Automaton has 9511 states and 13276 transitions. Word has length 112 [2023-03-31 01:33:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:25,186 INFO L495 AbstractCegarLoop]: Abstraction has 9511 states and 13276 transitions. [2023-03-31 01:33:25,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 11 states have internal predecessors, (72), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:33:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 9511 states and 13276 transitions. [2023-03-31 01:33:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-03-31 01:33:25,189 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:25,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2023-03-31 01:33:25,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:33:25,189 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:25,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash -865563203, now seen corresponding path program 1 times [2023-03-31 01:33:25,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833534663] [2023-03-31 01:33:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:33:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-03-31 01:33:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 01:33:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-03-31 01:33:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-03-31 01:33:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:33:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:33:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-03-31 01:33:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-03-31 01:33:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-03-31 01:33:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-31 01:33:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 01:33:25,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833534663] [2023-03-31 01:33:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833534663] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:33:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114209140] [2023-03-31 01:33:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:25,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:33:25,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:33:25,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:33:25,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 01:33:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:25,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 01:33:25,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:33:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:33:25,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:33:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 01:33:25,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114209140] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:33:25,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:33:25,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-03-31 01:33:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130247658] [2023-03-31 01:33:25,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:33:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-31 01:33:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-31 01:33:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-03-31 01:33:25,924 INFO L87 Difference]: Start difference. First operand 9511 states and 13276 transitions. Second operand has 20 states, 19 states have (on average 7.368421052631579) internal successors, (140), 14 states have internal predecessors, (140), 7 states have call successors, (36), 13 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-03-31 01:33:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:30,334 INFO L93 Difference]: Finished difference Result 30083 states and 42389 transitions. [2023-03-31 01:33:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-03-31 01:33:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 7.368421052631579) internal successors, (140), 14 states have internal predecessors, (140), 7 states have call successors, (36), 13 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 114 [2023-03-31 01:33:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:30,386 INFO L225 Difference]: With dead ends: 30083 [2023-03-31 01:33:30,386 INFO L226 Difference]: Without dead ends: 20655 [2023-03-31 01:33:30,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=575, Invalid=1975, Unknown=0, NotChecked=0, Total=2550 [2023-03-31 01:33:30,405 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 955 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:30,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 157 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:33:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20655 states.