/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.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:16:56,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:16:56,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:16:56,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:16:56,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:16:56,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:16:56,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:16:56,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:16:56,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:16:56,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:16:56,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:16:56,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:16:56,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:16:56,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:16:56,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:16:56,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:16:56,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:16:56,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:16:56,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:16:56,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:16:56,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:16:56,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:16:56,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:16:56,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:16:56,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:16:56,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:16:56,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:16:56,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:16:56,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:16:56,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:16:56,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:16:56,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:16:56,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:16:56,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:16:56,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:16:56,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:16:56,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:16:56,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:16:56,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:16:56,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:16:56,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:16:56,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:16:56,460 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:16:56,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:16:56,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:16:56,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:16:56,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:16:56,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:16:56,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:16:56,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:16:56,463 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:16:56,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:16:56,464 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:16:56,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:16:56,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:16:56,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:16:56,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:16:56,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:16:56,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:16:56,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:16:56,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:16:56,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:16:56,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:16:56,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:16:56,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:16:56,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:16:56,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:16:56,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:16:56,467 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:16:56,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:16:56,468 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:16:56,468 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:16:56,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:16:56,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:16:56,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:16:56,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:16:56,741 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:16:56,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-04-02 05:16:57,836 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:16:58,078 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:16:58,078 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-04-02 05:16:58,090 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d1d7b6e/fd43bd8f5067409fb84190c23e6051a4/FLAGb64f48987 [2023-04-02 05:16:58,102 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d1d7b6e/fd43bd8f5067409fb84190c23e6051a4 [2023-04-02 05:16:58,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:16:58,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:16:58,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:16:58,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:16:58,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:16:58,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dc1962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58, skipping insertion in model container [2023-04-02 05:16:58,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:16:58,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:16:58,318 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.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-04-02 05:16:58,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:16:58,331 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:16:58,377 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.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-04-02 05:16:58,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:16:58,391 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:16:58,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58 WrapperNode [2023-04-02 05:16:58,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:16:58,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:16:58,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:16:58,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:16:58,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:16:58,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:16:58,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:16:58,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:16:58,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (1/1) ... [2023-04-02 05:16:58,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:16:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:58,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:16:58,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:16:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:16:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:16:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:16:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:16:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:16:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:16:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:16:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:16:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:16:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:16:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:16:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:16:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:16:58,630 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:16:58,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:16:59,117 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:16:59,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:16:59,124 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:16:59,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:16:59 BoogieIcfgContainer [2023-04-02 05:16:59,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:16:59,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:16:59,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:16:59,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:16:59,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:16:58" (1/3) ... [2023-04-02 05:16:59,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c779ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:16:59, skipping insertion in model container [2023-04-02 05:16:59,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:58" (2/3) ... [2023-04-02 05:16:59,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c779ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:16:59, skipping insertion in model container [2023-04-02 05:16:59,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:16:59" (3/3) ... [2023-04-02 05:16:59,132 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-04-02 05:16:59,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:16:59,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:16:59,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:16:59,198 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;@73010c3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:16:59,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:16:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 96 states have (on average 1.6354166666666667) internal successors, (157), 97 states have internal predecessors, (157), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:16:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:16:59,215 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:59,216 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] [2023-04-02 05:16:59,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:59,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:59,225 INFO L85 PathProgramCache]: Analyzing trace with hash -233187504, now seen corresponding path program 1 times [2023-04-02 05:16:59,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:59,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620720636] [2023-04-02 05:16:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:16:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:16:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:16:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:16:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:16:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620720636] [2023-04-02 05:16:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620720636] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:59,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:16:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164910893] [2023-04-02 05:16:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:59,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:16:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:16:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:16:59,987 INFO L87 Difference]: Start difference. First operand has 120 states, 96 states have (on average 1.6354166666666667) internal successors, (157), 97 states have internal predecessors, (157), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:00,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:00,855 INFO L93 Difference]: Finished difference Result 194 states and 281 transitions. [2023-04-02 05:17:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 05:17:00,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 57 [2023-04-02 05:17:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:00,870 INFO L225 Difference]: With dead ends: 194 [2023-04-02 05:17:00,870 INFO L226 Difference]: Without dead ends: 115 [2023-04-02 05:17:00,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:17:00,879 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 291 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:00,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 93 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-04-02 05:17:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-04-02 05:17:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.6129032258064515) internal successors, (150), 93 states have internal predecessors, (150), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:17:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-04-02 05:17:00,949 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 57 [2023-04-02 05:17:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:00,950 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-04-02 05:17:00,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-04-02 05:17:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:17:00,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:00,956 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] [2023-04-02 05:17:00,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:17:00,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:00,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash 14958990, now seen corresponding path program 1 times [2023-04-02 05:17:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678753043] [2023-04-02 05:17:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:17:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:17:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:17:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:17:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:17:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:17:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:17:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:01,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:01,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678753043] [2023-04-02 05:17:01,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678753043] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:01,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:01,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:17:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658771161] [2023-04-02 05:17:01,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:01,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:17:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:17:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:17:01,390 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:17:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:02,879 INFO L93 Difference]: Finished difference Result 198 states and 287 transitions. [2023-04-02 05:17:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:17:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2023-04-02 05:17:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:02,882 INFO L225 Difference]: With dead ends: 198 [2023-04-02 05:17:02,883 INFO L226 Difference]: Without dead ends: 126 [2023-04-02 05:17:02,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:17:02,885 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 672 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:02,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 135 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:17:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-04-02 05:17:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 115. [2023-04-02 05:17:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.2795698924731183) internal successors, (119), 93 states have internal predecessors, (119), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:17:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 140 transitions. [2023-04-02 05:17:02,921 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 140 transitions. Word has length 57 [2023-04-02 05:17:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:02,921 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 140 transitions. [2023-04-02 05:17:02,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:17:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 140 transitions. [2023-04-02 05:17:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 05:17:02,930 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:02,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:02,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:17:02,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:02,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash 689291461, now seen corresponding path program 1 times [2023-04-02 05:17:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556370443] [2023-04-02 05:17:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:03,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556370443] [2023-04-02 05:17:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556370443] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:17:03,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080960563] [2023-04-02 05:17:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:17:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:17:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:17:03,733 INFO L87 Difference]: Start difference. First operand 115 states and 140 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:12,901 INFO L93 Difference]: Finished difference Result 1133 states and 1597 transitions. [2023-04-02 05:17:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-04-02 05:17:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-04-02 05:17:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:12,913 INFO L225 Difference]: With dead ends: 1133 [2023-04-02 05:17:12,913 INFO L226 Difference]: Without dead ends: 1067 [2023-04-02 05:17:12,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6456 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2884, Invalid=15206, Unknown=0, NotChecked=0, Total=18090 [2023-04-02 05:17:12,922 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 2786 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 4180 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 4556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 4180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:12,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 411 Invalid, 4556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 4180 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 05:17:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-04-02 05:17:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 457. [2023-04-02 05:17:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 355 states have (on average 1.4) internal successors, (497), 365 states have internal predecessors, (497), 46 states have call successors, (46), 46 states have call predecessors, (46), 55 states have return successors, (79), 45 states have call predecessors, (79), 45 states have call successors, (79) [2023-04-02 05:17:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 622 transitions. [2023-04-02 05:17:13,055 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 622 transitions. Word has length 87 [2023-04-02 05:17:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:13,056 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 622 transitions. [2023-04-02 05:17:13,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 622 transitions. [2023-04-02 05:17:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:17:13,060 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:13,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:13,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:17:13,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:13,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1690098165, now seen corresponding path program 1 times [2023-04-02 05:17:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:13,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85099592] [2023-04-02 05:17:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:13,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85099592] [2023-04-02 05:17:13,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85099592] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:13,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:13,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:17:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015963433] [2023-04-02 05:17:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:17:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:17:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:17:13,329 INFO L87 Difference]: Start difference. First operand 457 states and 622 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 05:17:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:14,429 INFO L93 Difference]: Finished difference Result 1233 states and 1724 transitions. [2023-04-02 05:17:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:17:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2023-04-02 05:17:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:14,437 INFO L225 Difference]: With dead ends: 1233 [2023-04-02 05:17:14,437 INFO L226 Difference]: Without dead ends: 825 [2023-04-02 05:17:14,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:17:14,452 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 393 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:14,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 106 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-04-02 05:17:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 823. [2023-04-02 05:17:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 629 states have (on average 1.397456279809221) internal successors, (879), 647 states have internal predecessors, (879), 88 states have call successors, (88), 88 states have call predecessors, (88), 105 states have return successors, (165), 87 states have call predecessors, (165), 87 states have call successors, (165) [2023-04-02 05:17:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1132 transitions. [2023-04-02 05:17:14,576 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1132 transitions. Word has length 89 [2023-04-02 05:17:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:14,576 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1132 transitions. [2023-04-02 05:17:14,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 05:17:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1132 transitions. [2023-04-02 05:17:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:17:14,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:14,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:14,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:17:14,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:14,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash 402395709, now seen corresponding path program 1 times [2023-04-02 05:17:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:14,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331249030] [2023-04-02 05:17:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:14,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331249030] [2023-04-02 05:17:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331249030] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:15,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:15,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:17:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318172810] [2023-04-02 05:17:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:17:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:17:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:17:15,361 INFO L87 Difference]: Start difference. First operand 823 states and 1132 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:24,858 INFO L93 Difference]: Finished difference Result 3225 states and 4565 transitions. [2023-04-02 05:17:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-04-02 05:17:24,865 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2023-04-02 05:17:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:24,878 INFO L225 Difference]: With dead ends: 3225 [2023-04-02 05:17:24,879 INFO L226 Difference]: Without dead ends: 2451 [2023-04-02 05:17:24,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6279 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2787, Invalid=14505, Unknown=0, NotChecked=0, Total=17292 [2023-04-02 05:17:24,888 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 2867 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 3791 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 3791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:24,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2880 Valid, 390 Invalid, 4196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 3791 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 05:17:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-04-02 05:17:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2385. [2023-04-02 05:17:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 1824 states have (on average 1.4292763157894737) internal successors, (2607), 1861 states have internal predecessors, (2607), 262 states have call successors, (262), 262 states have call predecessors, (262), 298 states have return successors, (514), 261 states have call predecessors, (514), 261 states have call successors, (514) [2023-04-02 05:17:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3383 transitions. [2023-04-02 05:17:25,264 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3383 transitions. Word has length 89 [2023-04-02 05:17:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:25,266 INFO L495 AbstractCegarLoop]: Abstraction has 2385 states and 3383 transitions. [2023-04-02 05:17:25,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3383 transitions. [2023-04-02 05:17:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:17:25,270 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:25,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:25,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:17:25,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:25,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -475511525, now seen corresponding path program 1 times [2023-04-02 05:17:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:25,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448996150] [2023-04-02 05:17:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:25,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:25,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448996150] [2023-04-02 05:17:25,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448996150] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:25,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:25,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:17:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007146988] [2023-04-02 05:17:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:25,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:17:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:25,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:17:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:17:25,649 INFO L87 Difference]: Start difference. First operand 2385 states and 3383 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:27,488 INFO L93 Difference]: Finished difference Result 5558 states and 7912 transitions. [2023-04-02 05:17:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:17:27,489 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-04-02 05:17:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:27,504 INFO L225 Difference]: With dead ends: 5558 [2023-04-02 05:17:27,504 INFO L226 Difference]: Without dead ends: 3222 [2023-04-02 05:17:27,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:17:27,513 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1062 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:27,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 106 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:17:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2023-04-02 05:17:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3218. [2023-04-02 05:17:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 2446 states have (on average 1.4223221586263286) internal successors, (3479), 2508 states have internal predecessors, (3479), 355 states have call successors, (355), 355 states have call predecessors, (355), 416 states have return successors, (710), 354 states have call predecessors, (710), 354 states have call successors, (710) [2023-04-02 05:17:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 4544 transitions. [2023-04-02 05:17:28,025 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 4544 transitions. Word has length 90 [2023-04-02 05:17:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:28,026 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 4544 transitions. [2023-04-02 05:17:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 4544 transitions. [2023-04-02 05:17:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:17:28,029 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:28,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:28,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:17:28,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:28,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1171913436, now seen corresponding path program 1 times [2023-04-02 05:17:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616465187] [2023-04-02 05:17:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:28,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:28,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616465187] [2023-04-02 05:17:28,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616465187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:28,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:28,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:17:28,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038749670] [2023-04-02 05:17:28,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:28,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:17:28,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:28,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:17:28,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:17:28,630 INFO L87 Difference]: Start difference. First operand 3218 states and 4544 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:30,564 INFO L93 Difference]: Finished difference Result 3490 states and 5132 transitions. [2023-04-02 05:17:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 05:17:30,565 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-04-02 05:17:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:30,586 INFO L225 Difference]: With dead ends: 3490 [2023-04-02 05:17:30,586 INFO L226 Difference]: Without dead ends: 3488 [2023-04-02 05:17:30,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:17:30,590 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 407 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:30,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 314 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:17:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2023-04-02 05:17:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3263. [2023-04-02 05:17:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2476 states have (on average 1.4135702746365104) internal successors, (3500), 2543 states have internal predecessors, (3500), 360 states have call successors, (360), 360 states have call predecessors, (360), 426 states have return successors, (725), 359 states have call predecessors, (725), 359 states have call successors, (725) [2023-04-02 05:17:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4585 transitions. [2023-04-02 05:17:31,147 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4585 transitions. Word has length 90 [2023-04-02 05:17:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:31,147 INFO L495 AbstractCegarLoop]: Abstraction has 3263 states and 4585 transitions. [2023-04-02 05:17:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4585 transitions. [2023-04-02 05:17:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:17:31,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:31,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:31,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:17:31,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:31,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:31,151 INFO L85 PathProgramCache]: Analyzing trace with hash -145350275, now seen corresponding path program 1 times [2023-04-02 05:17:31,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162652102] [2023-04-02 05:17:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:17:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:17:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:17:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:17:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162652102] [2023-04-02 05:17:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162652102] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:31,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:17:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77460004] [2023-04-02 05:17:31,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:31,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:17:31,543 INFO L87 Difference]: Start difference. First operand 3263 states and 4585 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:34,021 INFO L93 Difference]: Finished difference Result 6583 states and 9317 transitions. [2023-04-02 05:17:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:17:34,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:17:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:34,039 INFO L225 Difference]: With dead ends: 6583 [2023-04-02 05:17:34,039 INFO L226 Difference]: Without dead ends: 4172 [2023-04-02 05:17:34,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:17:34,046 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1311 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:34,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 71 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2023-04-02 05:17:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3698. [2023-04-02 05:17:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 2808 states have (on average 1.4248575498575498) internal successors, (4001), 2893 states have internal predecessors, (4001), 403 states have call successors, (403), 403 states have call predecessors, (403), 486 states have return successors, (814), 401 states have call predecessors, (814), 402 states have call successors, (814) [2023-04-02 05:17:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5218 transitions. [2023-04-02 05:17:34,655 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5218 transitions. Word has length 91 [2023-04-02 05:17:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:34,656 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 5218 transitions. [2023-04-02 05:17:34,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5218 transitions. [2023-04-02 05:17:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:17:34,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:34,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:17:34,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:34,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1135110413, now seen corresponding path program 1 times [2023-04-02 05:17:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589335959] [2023-04-02 05:17:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:17:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:17:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:17:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:35,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:35,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589335959] [2023-04-02 05:17:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589335959] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:17:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656157957] [2023-04-02 05:17:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:17:35,063 INFO L87 Difference]: Start difference. First operand 3698 states and 5218 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:37,693 INFO L93 Difference]: Finished difference Result 9322 states and 13141 transitions. [2023-04-02 05:17:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:17:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:17:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:37,716 INFO L225 Difference]: With dead ends: 9322 [2023-04-02 05:17:37,717 INFO L226 Difference]: Without dead ends: 5679 [2023-04-02 05:17:37,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:17:37,727 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1307 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:37,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 71 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2023-04-02 05:17:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3688. [2023-04-02 05:17:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 2799 states have (on average 1.4233654876741693) internal successors, (3984), 2885 states have internal predecessors, (3984), 402 states have call successors, (402), 402 states have call predecessors, (402), 486 states have return successors, (812), 400 states have call predecessors, (812), 401 states have call successors, (812) [2023-04-02 05:17:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5198 transitions. [2023-04-02 05:17:38,385 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5198 transitions. Word has length 91 [2023-04-02 05:17:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:38,385 INFO L495 AbstractCegarLoop]: Abstraction has 3688 states and 5198 transitions. [2023-04-02 05:17:38,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5198 transitions. [2023-04-02 05:17:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:17:38,387 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:38,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:38,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:17:38,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:38,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1317041411, now seen corresponding path program 1 times [2023-04-02 05:17:38,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:38,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156455762] [2023-04-02 05:17:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:17:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:17:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:38,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:38,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156455762] [2023-04-02 05:17:38,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156455762] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:38,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:38,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:17:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769212777] [2023-04-02 05:17:38,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:17:38,734 INFO L87 Difference]: Start difference. First operand 3688 states and 5198 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:41,141 INFO L93 Difference]: Finished difference Result 8714 states and 12231 transitions. [2023-04-02 05:17:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:17:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:17:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:41,175 INFO L225 Difference]: With dead ends: 8714 [2023-04-02 05:17:41,175 INFO L226 Difference]: Without dead ends: 5101 [2023-04-02 05:17:41,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:17:41,185 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1027 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:41,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 72 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2023-04-02 05:17:41,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3697. [2023-04-02 05:17:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 2805 states have (on average 1.4224598930481283) internal successors, (3990), 2892 states have internal predecessors, (3990), 403 states have call successors, (403), 403 states have call predecessors, (403), 488 states have return successors, (815), 401 states have call predecessors, (815), 402 states have call successors, (815) [2023-04-02 05:17:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5208 transitions. [2023-04-02 05:17:41,687 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5208 transitions. Word has length 91 [2023-04-02 05:17:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:41,687 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5208 transitions. [2023-04-02 05:17:41,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5208 transitions. [2023-04-02 05:17:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:17:41,689 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:41,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:41,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:17:41,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:41,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1287180787, now seen corresponding path program 1 times [2023-04-02 05:17:41,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935516764] [2023-04-02 05:17:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:41,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:17:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935516764] [2023-04-02 05:17:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935516764] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:42,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:17:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040101222] [2023-04-02 05:17:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:42,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:17:42,048 INFO L87 Difference]: Start difference. First operand 3697 states and 5208 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:44,332 INFO L93 Difference]: Finished difference Result 8162 states and 11416 transitions. [2023-04-02 05:17:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:17:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:17:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:44,348 INFO L225 Difference]: With dead ends: 8162 [2023-04-02 05:17:44,348 INFO L226 Difference]: Without dead ends: 4558 [2023-04-02 05:17:44,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:17:44,356 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1393 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:44,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 71 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2023-04-02 05:17:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 3727. [2023-04-02 05:17:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2827 states have (on average 1.4220021223912274) internal successors, (4020), 2916 states have internal predecessors, (4020), 406 states have call successors, (406), 406 states have call predecessors, (406), 493 states have return successors, (822), 404 states have call predecessors, (822), 405 states have call successors, (822) [2023-04-02 05:17:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5248 transitions. [2023-04-02 05:17:44,879 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5248 transitions. Word has length 91 [2023-04-02 05:17:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:44,879 INFO L495 AbstractCegarLoop]: Abstraction has 3727 states and 5248 transitions. [2023-04-02 05:17:44,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5248 transitions. [2023-04-02 05:17:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:17:44,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:44,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:17:44,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:44,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash 770149245, now seen corresponding path program 1 times [2023-04-02 05:17:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67999742] [2023-04-02 05:17:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67999742] [2023-04-02 05:17:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67999742] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:45,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:45,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:17:45,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254340217] [2023-04-02 05:17:45,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:17:45,220 INFO L87 Difference]: Start difference. First operand 3727 states and 5248 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:47,592 INFO L93 Difference]: Finished difference Result 7686 states and 10714 transitions. [2023-04-02 05:17:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:17:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:17:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:47,606 INFO L225 Difference]: With dead ends: 7686 [2023-04-02 05:17:47,606 INFO L226 Difference]: Without dead ends: 4070 [2023-04-02 05:17:47,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:17:47,615 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1176 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:47,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 71 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2023-04-02 05:17:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3733. [2023-04-02 05:17:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 2832 states have (on average 1.4212570621468927) internal successors, (4025), 2920 states have internal predecessors, (4025), 407 states have call successors, (407), 407 states have call predecessors, (407), 493 states have return successors, (822), 405 states have call predecessors, (822), 406 states have call successors, (822) [2023-04-02 05:17:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5254 transitions. [2023-04-02 05:17:48,195 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5254 transitions. Word has length 91 [2023-04-02 05:17:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:48,195 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5254 transitions. [2023-04-02 05:17:48,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:17:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5254 transitions. [2023-04-02 05:17:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 05:17:48,196 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:48,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:48,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:17:48,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:48,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash 986089165, now seen corresponding path program 1 times [2023-04-02 05:17:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:48,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119224398] [2023-04-02 05:17:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:48,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:17:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:17:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:17:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:17:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:17:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:48,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:48,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119224398] [2023-04-02 05:17:48,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119224398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:48,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:48,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:17:48,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576431961] [2023-04-02 05:17:48,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:48,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:17:48,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:17:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:17:48,607 INFO L87 Difference]: Start difference. First operand 3733 states and 5254 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:17:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:50,915 INFO L93 Difference]: Finished difference Result 7816 states and 11090 transitions. [2023-04-02 05:17:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-02 05:17:50,916 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2023-04-02 05:17:50,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:50,933 INFO L225 Difference]: With dead ends: 7816 [2023-04-02 05:17:50,933 INFO L226 Difference]: Without dead ends: 5123 [2023-04-02 05:17:50,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 05:17:50,941 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1339 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:50,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 129 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:17:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2023-04-02 05:17:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4865. [2023-04-02 05:17:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 3693 states have (on average 1.421066883292716) internal successors, (5248), 3810 states have internal predecessors, (5248), 528 states have call successors, (528), 528 states have call predecessors, (528), 643 states have return successors, (1058), 526 states have call predecessors, (1058), 527 states have call successors, (1058) [2023-04-02 05:17:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 6834 transitions. [2023-04-02 05:17:51,619 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 6834 transitions. Word has length 92 [2023-04-02 05:17:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:51,620 INFO L495 AbstractCegarLoop]: Abstraction has 4865 states and 6834 transitions. [2023-04-02 05:17:51,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:17:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 6834 transitions. [2023-04-02 05:17:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:17:51,623 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:51,624 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:51,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:17:51,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:51,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash -652327078, now seen corresponding path program 1 times [2023-04-02 05:17:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:51,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359647002] [2023-04-02 05:17:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:17:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:17:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:17:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:17:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:17:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:17:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:17:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:17:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359647002] [2023-04-02 05:17:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359647002] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491341875] [2023-04-02 05:17:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:52,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:52,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:52,213 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) [2023-04-02 05:17:52,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:17:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:17:52,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:17:53,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:17:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491341875] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:53,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:17:53,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2023-04-02 05:17:53,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507234493] [2023-04-02 05:17:53,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:53,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:17:53,523 INFO L87 Difference]: Start difference. First operand 4865 states and 6834 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:17:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:55,508 INFO L93 Difference]: Finished difference Result 8406 states and 11876 transitions. [2023-04-02 05:17:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:17:55,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2023-04-02 05:17:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:55,532 INFO L225 Difference]: With dead ends: 8406 [2023-04-02 05:17:55,533 INFO L226 Difference]: Without dead ends: 7648 [2023-04-02 05:17:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:17:55,538 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 986 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 793 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:17:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7648 states. [2023-04-02 05:17:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7648 to 7638. [2023-04-02 05:17:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7638 states, 5801 states have (on average 1.4257886571280813) internal successors, (8271), 5967 states have internal predecessors, (8271), 836 states have call successors, (836), 836 states have call predecessors, (836), 1000 states have return successors, (1684), 834 states have call predecessors, (1684), 835 states have call successors, (1684) [2023-04-02 05:17:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 10791 transitions. [2023-04-02 05:17:56,528 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 10791 transitions. Word has length 134 [2023-04-02 05:17:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:56,529 INFO L495 AbstractCegarLoop]: Abstraction has 7638 states and 10791 transitions. [2023-04-02 05:17:56,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:17:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 10791 transitions. [2023-04-02 05:17:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:17:56,533 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:56,533 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:17:56,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:17:56,740 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,SelfDestructingSolverStorable13 [2023-04-02 05:17:56,741 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:56,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash 628133610, now seen corresponding path program 1 times [2023-04-02 05:17:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927942693] [2023-04-02 05:17:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:17:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:17:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:17:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:17:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:17:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:17:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:17:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:17:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927942693] [2023-04-02 05:17:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927942693] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507539607] [2023-04-02 05:17:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:57,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:57,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:57,320 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) [2023-04-02 05:17:57,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:17:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:17:57,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:17:58,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:17:58,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507539607] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:58,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:17:58,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [19] total 31 [2023-04-02 05:17:58,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149565701] [2023-04-02 05:17:58,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:17:58,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:17:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:17:58,414 INFO L87 Difference]: Start difference. First operand 7638 states and 10791 transitions. Second operand has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:18:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:00,746 INFO L93 Difference]: Finished difference Result 12244 states and 17312 transitions. [2023-04-02 05:18:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:18:00,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2023-04-02 05:18:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:00,787 INFO L225 Difference]: With dead ends: 12244 [2023-04-02 05:18:00,788 INFO L226 Difference]: Without dead ends: 10416 [2023-04-02 05:18:00,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:18:00,797 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 910 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:00,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 612 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:18:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2023-04-02 05:18:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 10406. [2023-04-02 05:18:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10406 states, 7905 states have (on average 1.426944971537002) internal successors, (11280), 8129 states have internal predecessors, (11280), 1139 states have call successors, (1139), 1139 states have call predecessors, (1139), 1361 states have return successors, (2300), 1137 states have call predecessors, (2300), 1138 states have call successors, (2300) [2023-04-02 05:18:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10406 states to 10406 states and 14719 transitions. [2023-04-02 05:18:02,281 INFO L78 Accepts]: Start accepts. Automaton has 10406 states and 14719 transitions. Word has length 134 [2023-04-02 05:18:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:02,281 INFO L495 AbstractCegarLoop]: Abstraction has 10406 states and 14719 transitions. [2023-04-02 05:18:02,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:18:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10406 states and 14719 transitions. [2023-04-02 05:18:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:18:02,286 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:02,286 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:02,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:02,492 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,SelfDestructingSolverStorable14 [2023-04-02 05:18:02,492 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:02,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1824018214, now seen corresponding path program 1 times [2023-04-02 05:18:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127921129] [2023-04-02 05:18:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:02,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:18:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:18:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:18:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:18:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:18:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:18:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:18:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127921129] [2023-04-02 05:18:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127921129] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503748656] [2023-04-02 05:18:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:03,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:03,096 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) [2023-04-02 05:18:03,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:18:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:03,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:18:03,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:18:04,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503748656] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 30 [2023-04-02 05:18:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617962445] [2023-04-02 05:18:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:18:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:18:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:18:04,153 INFO L87 Difference]: Start difference. First operand 10406 states and 14719 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:18:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:06,418 INFO L93 Difference]: Finished difference Result 15819 states and 22383 transitions. [2023-04-02 05:18:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:18:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2023-04-02 05:18:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:06,463 INFO L225 Difference]: With dead ends: 15819 [2023-04-02 05:18:06,463 INFO L226 Difference]: Without dead ends: 12168 [2023-04-02 05:18:06,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:18:06,475 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 998 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:06,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 527 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:18:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12168 states. [2023-04-02 05:18:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12168 to 12134. [2023-04-02 05:18:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12134 states, 9221 states have (on average 1.4276108881900011) internal successors, (13164), 9475 states have internal predecessors, (13164), 1330 states have call successors, (1330), 1330 states have call predecessors, (1330), 1582 states have return successors, (2687), 1328 states have call predecessors, (2687), 1329 states have call successors, (2687) [2023-04-02 05:18:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12134 states to 12134 states and 17181 transitions. [2023-04-02 05:18:08,180 INFO L78 Accepts]: Start accepts. Automaton has 12134 states and 17181 transitions. Word has length 134 [2023-04-02 05:18:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:08,180 INFO L495 AbstractCegarLoop]: Abstraction has 12134 states and 17181 transitions. [2023-04-02 05:18:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:18:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 12134 states and 17181 transitions. [2023-04-02 05:18:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:18:08,184 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:08,185 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:08,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:08,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:08,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:08,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1794157590, now seen corresponding path program 1 times [2023-04-02 05:18:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:08,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939451333] [2023-04-02 05:18:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:18:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:18:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:18:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:18:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:18:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:18:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:18:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939451333] [2023-04-02 05:18:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939451333] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237617790] [2023-04-02 05:18:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:08,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:08,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:08,955 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) [2023-04-02 05:18:08,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:18:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:18:09,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:18:09,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237617790] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2023-04-02 05:18:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324463995] [2023-04-02 05:18:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:09,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:18:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:18:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:18:09,930 INFO L87 Difference]: Start difference. First operand 12134 states and 17181 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:18:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:12,173 INFO L93 Difference]: Finished difference Result 19359 states and 27415 transitions. [2023-04-02 05:18:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:18:12,173 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 134 [2023-04-02 05:18:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:12,218 INFO L225 Difference]: With dead ends: 19359 [2023-04-02 05:18:12,218 INFO L226 Difference]: Without dead ends: 12872 [2023-04-02 05:18:12,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:18:12,232 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 835 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:12,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 595 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:18:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12872 states. [2023-04-02 05:18:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12872 to 12864. [2023-04-02 05:18:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12864 states, 9779 states have (on average 1.427651089068412) internal successors, (13961), 10043 states have internal predecessors, (13961), 1411 states have call successors, (1411), 1411 states have call predecessors, (1411), 1673 states have return successors, (2849), 1409 states have call predecessors, (2849), 1410 states have call successors, (2849) [2023-04-02 05:18:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 18221 transitions. [2023-04-02 05:18:14,123 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 18221 transitions. Word has length 134 [2023-04-02 05:18:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:14,123 INFO L495 AbstractCegarLoop]: Abstraction has 12864 states and 18221 transitions. [2023-04-02 05:18:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:18:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 18221 transitions. [2023-04-02 05:18:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:18:14,127 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:14,128 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:14,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-02 05:18:14,337 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:14,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash 263172442, now seen corresponding path program 1 times [2023-04-02 05:18:14,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:14,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851230981] [2023-04-02 05:18:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:14,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:18:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 05:18:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:18:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:18:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:18:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:18:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 05:18:15,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:15,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851230981] [2023-04-02 05:18:15,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851230981] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:15,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:15,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:18:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68628905] [2023-04-02 05:18:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:18:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:18:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:18:15,019 INFO L87 Difference]: Start difference. First operand 12864 states and 18221 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 13 states have internal predecessors, (85), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:18:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:27,564 INFO L93 Difference]: Finished difference Result 29314 states and 41785 transitions. [2023-04-02 05:18:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-04-02 05:18:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 13 states have internal predecessors, (85), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 134 [2023-04-02 05:18:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:27,615 INFO L225 Difference]: With dead ends: 29314 [2023-04-02 05:18:27,615 INFO L226 Difference]: Without dead ends: 19513 [2023-04-02 05:18:27,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10399 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3699, Invalid=23361, Unknown=0, NotChecked=0, Total=27060 [2023-04-02 05:18:27,644 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1849 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 6207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:27,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 624 Invalid, 6207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 05:18:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19513 states. [2023-04-02 05:18:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19513 to 19192. [2023-04-02 05:18:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19192 states, 14589 states have (on average 1.427239701144698) internal successors, (20822), 14945 states have internal predecessors, (20822), 2124 states have call successors, (2124), 2124 states have call predecessors, (2124), 2478 states have return successors, (4269), 2122 states have call predecessors, (4269), 2123 states have call successors, (4269) [2023-04-02 05:18:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19192 states to 19192 states and 27215 transitions. [2023-04-02 05:18:30,420 INFO L78 Accepts]: Start accepts. Automaton has 19192 states and 27215 transitions. Word has length 134 [2023-04-02 05:18:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:30,421 INFO L495 AbstractCegarLoop]: Abstraction has 19192 states and 27215 transitions. [2023-04-02 05:18:30,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 13 states have internal predecessors, (85), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:18:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 19192 states and 27215 transitions. [2023-04-02 05:18:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:18:30,427 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:30,427 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 05:18:30,427 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:30,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -402831470, now seen corresponding path program 1 times [2023-04-02 05:18:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013778348] [2023-04-02 05:18:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:18:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:18:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:18:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:18:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:18:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:18:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:18:30,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:30,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013778348] [2023-04-02 05:18:30,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013778348] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:30,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874250764] [2023-04-02 05:18:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:30,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:30,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:30,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:30,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:18:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:18:30,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:31,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:18:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:18:31,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874250764] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:18:31,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:18:31,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:18:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106758290] [2023-04-02 05:18:31,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:18:31,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:18:31,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:18:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:18:31,380 INFO L87 Difference]: Start difference. First operand 19192 states and 27215 transitions. Second operand has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:18:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:39,696 INFO L93 Difference]: Finished difference Result 59204 states and 84519 transitions. [2023-04-02 05:18:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 05:18:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 136 [2023-04-02 05:18:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:39,916 INFO L225 Difference]: With dead ends: 59204 [2023-04-02 05:18:39,916 INFO L226 Difference]: Without dead ends: 40116 [2023-04-02 05:18:39,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=677, Invalid=2403, Unknown=0, NotChecked=0, Total=3080 [2023-04-02 05:18:39,949 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1863 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:39,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 146 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:18:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40116 states. [2023-04-02 05:18:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40116 to 36147. [2023-04-02 05:18:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36147 states, 27240 states have (on average 1.3817180616740088) internal successors, (37638), 27860 states have internal predecessors, (37638), 4144 states have call successors, (4144), 4144 states have call predecessors, (4144), 4762 states have return successors, (8628), 4142 states have call predecessors, (8628), 4143 states have call successors, (8628) [2023-04-02 05:18:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36147 states to 36147 states and 50410 transitions. [2023-04-02 05:18:45,354 INFO L78 Accepts]: Start accepts. Automaton has 36147 states and 50410 transitions. Word has length 136 [2023-04-02 05:18:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:45,354 INFO L495 AbstractCegarLoop]: Abstraction has 36147 states and 50410 transitions. [2023-04-02 05:18:45,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:18:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 36147 states and 50410 transitions. [2023-04-02 05:18:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 05:18:45,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:45,361 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:45,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 05:18:45,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:45,568 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:45,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1812187168, now seen corresponding path program 1 times [2023-04-02 05:18:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070745814] [2023-04-02 05:18:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:18:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:18:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:18:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:18:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:18:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:18:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:18:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:18:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:18:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:18:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:18:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:18:45,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:45,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070745814] [2023-04-02 05:18:45,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070745814] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:45,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240445971] [2023-04-02 05:18:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:45,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:45,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:45,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:45,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 05:18:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:18:46,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:46,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:18:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:18:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240445971] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:18:46,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:18:46,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:18:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15397502] [2023-04-02 05:18:46,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:18:46,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:18:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:18:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:18:46,490 INFO L87 Difference]: Start difference. First operand 36147 states and 50410 transitions. Second operand has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:18:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:59,575 INFO L93 Difference]: Finished difference Result 104275 states and 146943 transitions. [2023-04-02 05:18:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-02 05:18:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 138 [2023-04-02 05:18:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:59,859 INFO L225 Difference]: With dead ends: 104275 [2023-04-02 05:18:59,860 INFO L226 Difference]: Without dead ends: 71101 [2023-04-02 05:18:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=693, Invalid=2499, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:18:59,926 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2148 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:59,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 140 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:18:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71101 states. [2023-04-02 05:19:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71101 to 67627. [2023-04-02 05:19:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67627 states, 50475 states have (on average 1.3572263496780586) internal successors, (68506), 51620 states have internal predecessors, (68506), 8004 states have call successors, (8004), 8004 states have call predecessors, (8004), 9147 states have return successors, (17209), 8002 states have call predecessors, (17209), 8003 states have call successors, (17209) [2023-04-02 05:19:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67627 states to 67627 states and 93719 transitions. [2023-04-02 05:19:10,804 INFO L78 Accepts]: Start accepts. Automaton has 67627 states and 93719 transitions. Word has length 138 [2023-04-02 05:19:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:10,804 INFO L495 AbstractCegarLoop]: Abstraction has 67627 states and 93719 transitions. [2023-04-02 05:19:10,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 67627 states and 93719 transitions. [2023-04-02 05:19:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 05:19:10,814 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:10,814 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:10,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-02 05:19:11,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:11,023 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:11,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash 546143122, now seen corresponding path program 1 times [2023-04-02 05:19:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:11,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018328885] [2023-04-02 05:19:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:11,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:19:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:19:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:19:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:19:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:19:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:19:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:19:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:11,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018328885] [2023-04-02 05:19:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018328885] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689994451] [2023-04-02 05:19:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:11,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:11,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:11,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 05:19:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:11,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:11,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:11,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:11,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689994451] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:11,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:11,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:11,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040490349] [2023-04-02 05:19:11,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:11,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:11,931 INFO L87 Difference]: Start difference. First operand 67627 states and 93719 transitions. Second operand has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:34,450 INFO L93 Difference]: Finished difference Result 195203 states and 273582 transitions. [2023-04-02 05:19:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-04-02 05:19:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 140 [2023-04-02 05:19:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:35,167 INFO L225 Difference]: With dead ends: 195203 [2023-04-02 05:19:35,167 INFO L226 Difference]: Without dead ends: 133054 [2023-04-02 05:19:35,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2023-04-02 05:19:35,294 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1604 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:35,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 149 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:19:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133054 states. [2023-04-02 05:19:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133054 to 125869. [2023-04-02 05:19:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125869 states, 92873 states have (on average 1.327371787279403) internal successors, (123277), 94948 states have internal predecessors, (123277), 15461 states have call successors, (15461), 15461 states have call predecessors, (15461), 17534 states have return successors, (34334), 15459 states have call predecessors, (34334), 15460 states have call successors, (34334) [2023-04-02 05:19:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125869 states to 125869 states and 173072 transitions. [2023-04-02 05:19:56,309 INFO L78 Accepts]: Start accepts. Automaton has 125869 states and 173072 transitions. Word has length 140 [2023-04-02 05:19:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:56,309 INFO L495 AbstractCegarLoop]: Abstraction has 125869 states and 173072 transitions. [2023-04-02 05:19:56,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 125869 states and 173072 transitions. [2023-04-02 05:19:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 05:19:56,321 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:56,321 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:56,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:56,522 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:56,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1986891744, now seen corresponding path program 1 times [2023-04-02 05:19:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:56,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171703587] [2023-04-02 05:19:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:19:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:19:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:19:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:19:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:19:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:19:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:19:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 05:19:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:57,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171703587] [2023-04-02 05:19:57,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171703587] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975878533] [2023-04-02 05:19:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:57,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:57,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:57,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 05:19:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:57,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:57,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:57,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975878533] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:57,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:57,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570282922] [2023-04-02 05:19:57,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:57,650 INFO L87 Difference]: Start difference. First operand 125869 states and 173072 transitions. Second operand has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37)