/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/eca-rers2012/Problem19_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:50:07,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:50:07,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:50:07,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 23:50:07,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 23:50:07,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 23:50:07,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 23:50:07,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 23:50:07,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 23:50:07,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 23:50:07,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 23:50:07,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 23:50:07,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:50:07,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:50:07,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:50:07,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:50:07,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:50:07,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:50:07,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:50:07,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:50:07,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:50:07,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:50:07,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:50:07,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:50:07,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:50:07,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:50:07,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:50:07,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:50:07,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:50:07,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:50:07,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:50:07,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:50:07,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:50:07,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:50:07,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:50:07,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:50:07,327 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 [2023-04-01 23:50:07,349 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:50:07,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:50:07,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:50:07,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:50:07,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:50:07,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:50:07,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:50:07,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:50:07,351 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:50:07,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:50:07,351 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:50:07,352 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:50:07,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:50:07,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:50:07,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:50:07,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:50:07,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:50:07,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:50:07,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:50:07,354 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:50:07,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:50:07,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:50:07,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:50:07,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:50:07,587 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:50:07,588 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:50:07,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label06.c [2023-04-01 23:50:08,706 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:50:09,253 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:50:09,254 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label06.c [2023-04-01 23:50:09,299 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ab6e2af/e6e221e83da64dc1b1a2bc8b107038ad/FLAGa48f0da1f [2023-04-01 23:50:09,325 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ab6e2af/e6e221e83da64dc1b1a2bc8b107038ad [2023-04-01 23:50:09,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:50:09,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:50:09,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:50:09,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:50:09,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:50:09,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:50:09" (1/1) ... [2023-04-01 23:50:09,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66079826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:09, skipping insertion in model container [2023-04-01 23:50:09,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:50:09" (1/1) ... [2023-04-01 23:50:09,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:50:09,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:50:09,799 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/eca-rers2012/Problem19_label06.c[7097,7110] [2023-04-01 23:50:10,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:50:10,925 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:50:10,942 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/eca-rers2012/Problem19_label06.c[7097,7110] [2023-04-01 23:50:11,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:50:11,638 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:50:11,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11 WrapperNode [2023-04-01 23:50:11,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:50:11,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:50:11,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:50:11,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:50:11,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:11,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:12,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:50:12,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:50:12,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:50:12,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:50:12,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (1/1) ... [2023-04-01 23:50:12,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:50:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:50:12,050 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) [2023-04-01 23:50:12,073 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 [2023-04-01 23:50:12,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:50:12,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:50:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:50:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:50:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:50:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:50:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:50:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:50:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:50:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:50:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:50:12,273 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:50:12,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:50:19,523 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:50:19,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:50:19,552 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:50:19,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:50:19 BoogieIcfgContainer [2023-04-01 23:50:19,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:50:19,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:50:19,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:50:19,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:50:19,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:50:09" (1/3) ... [2023-04-01 23:50:19,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f1ca70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:50:19, skipping insertion in model container [2023-04-01 23:50:19,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:50:11" (2/3) ... [2023-04-01 23:50:19,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f1ca70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:50:19, skipping insertion in model container [2023-04-01 23:50:19,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:50:19" (3/3) ... [2023-04-01 23:50:19,566 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label06.c [2023-04-01 23:50:19,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:50:19,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:50:19,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:50:19,682 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;@4f92d790, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:50:19,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:50:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 23:50:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-01 23:50:19,702 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:19,702 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] [2023-04-01 23:50:19,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:19,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -370134492, now seen corresponding path program 1 times [2023-04-01 23:50:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:19,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422971116] [2023-04-01 23:50:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422971116] [2023-04-01 23:50:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422971116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:20,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:50:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:50:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640222045] [2023-04-01 23:50:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:20,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:50:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:20,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:50:20,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:50:20,240 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:50:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:33,777 INFO L93 Difference]: Finished difference Result 6480 states and 12299 transitions. [2023-04-01 23:50:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:50:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-04-01 23:50:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:33,818 INFO L225 Difference]: With dead ends: 6480 [2023-04-01 23:50:33,819 INFO L226 Difference]: Without dead ends: 4635 [2023-04-01 23:50:33,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:50:33,834 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 7761 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 9808 mSolverCounterSat, 2328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7761 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 12136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2328 IncrementalHoareTripleChecker+Valid, 9808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7761 Valid, 493 Invalid, 12136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2328 Valid, 9808 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-04-01 23:50:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2023-04-01 23:50:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4629. [2023-04-01 23:50:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4571 states have (on average 1.6740319404944213) internal successors, (7652), 4574 states have internal predecessors, (7652), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-04-01 23:50:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7749 transitions. [2023-04-01 23:50:34,072 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7749 transitions. Word has length 60 [2023-04-01 23:50:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:34,074 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7749 transitions. [2023-04-01 23:50:34,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:50:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7749 transitions. [2023-04-01 23:50:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 23:50:34,085 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:34,086 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, 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] [2023-04-01 23:50:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:50:34,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:34,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1612651491, now seen corresponding path program 1 times [2023-04-01 23:50:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376441559] [2023-04-01 23:50:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376441559] [2023-04-01 23:50:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376441559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:50:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:50:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469902750] [2023-04-01 23:50:34,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:34,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:50:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:50:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:50:34,630 INFO L87 Difference]: Start difference. First operand 4629 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:45,587 INFO L93 Difference]: Finished difference Result 10809 states and 17786 transitions. [2023-04-01 23:50:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:50:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 138 [2023-04-01 23:50:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:45,621 INFO L225 Difference]: With dead ends: 10809 [2023-04-01 23:50:45,621 INFO L226 Difference]: Without dead ends: 6186 [2023-04-01 23:50:45,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:50:45,637 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 5313 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 11948 mSolverCounterSat, 1993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5313 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 13941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1993 IncrementalHoareTripleChecker+Valid, 11948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:45,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5313 Valid, 818 Invalid, 13941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1993 Valid, 11948 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-04-01 23:50:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2023-04-01 23:50:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6137. [2023-04-01 23:50:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 6029 states have (on average 1.4795156742411677) internal successors, (8920), 6039 states have internal predecessors, (8920), 26 states have call successors, (26), 26 states have call predecessors, (26), 81 states have return successors, (175), 71 states have call predecessors, (175), 25 states have call successors, (175) [2023-04-01 23:50:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 9121 transitions. [2023-04-01 23:50:45,808 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 9121 transitions. Word has length 138 [2023-04-01 23:50:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:45,810 INFO L495 AbstractCegarLoop]: Abstraction has 6137 states and 9121 transitions. [2023-04-01 23:50:45,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 9121 transitions. [2023-04-01 23:50:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 23:50:45,816 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:45,816 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, 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] [2023-04-01 23:50:45,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:50:45,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:45,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:45,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1905951403, now seen corresponding path program 1 times [2023-04-01 23:50:45,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:45,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623273315] [2023-04-01 23:50:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623273315] [2023-04-01 23:50:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623273315] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:46,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:50:46,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:50:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893934392] [2023-04-01 23:50:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:50:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:50:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:50:46,199 INFO L87 Difference]: Start difference. First operand 6137 states and 9121 transitions. Second operand has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:56,700 INFO L93 Difference]: Finished difference Result 18713 states and 28143 transitions. [2023-04-01 23:50:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:50:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 141 [2023-04-01 23:50:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:56,748 INFO L225 Difference]: With dead ends: 18713 [2023-04-01 23:50:56,748 INFO L226 Difference]: Without dead ends: 12582 [2023-04-01 23:50:56,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:50:56,763 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 14123 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 9844 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14123 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 10673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 9844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:56,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14123 Valid, 783 Invalid, 10673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 9844 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-04-01 23:50:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2023-04-01 23:50:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 12184. [2023-04-01 23:50:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 11913 states have (on average 1.428859229413246) internal successors, (17022), 11946 states have internal predecessors, (17022), 50 states have call successors, (50), 50 states have call predecessors, (50), 220 states have return successors, (561), 187 states have call predecessors, (561), 49 states have call successors, (561) [2023-04-01 23:50:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 17633 transitions. [2023-04-01 23:50:57,062 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 17633 transitions. Word has length 141 [2023-04-01 23:50:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:57,063 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 17633 transitions. [2023-04-01 23:50:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 17633 transitions. [2023-04-01 23:50:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 23:50:57,066 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:57,066 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, 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] [2023-04-01 23:50:57,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:50:57,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:57,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:57,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1303808149, now seen corresponding path program 1 times [2023-04-01 23:50:57,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:57,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834337235] [2023-04-01 23:50:57,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:57,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:57,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834337235] [2023-04-01 23:50:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834337235] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:57,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:50:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:50:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540149363] [2023-04-01 23:50:57,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:50:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:50:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:50:57,499 INFO L87 Difference]: Start difference. First operand 12184 states and 17633 transitions. Second operand has 7 states, 6 states have (on average 25.833333333333332) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:51:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:51:09,505 INFO L93 Difference]: Finished difference Result 37596 states and 55301 transitions. [2023-04-01 23:51:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:51:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.833333333333332) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 161 [2023-04-01 23:51:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:51:09,592 INFO L225 Difference]: With dead ends: 37596 [2023-04-01 23:51:09,592 INFO L226 Difference]: Without dead ends: 25418 [2023-04-01 23:51:09,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:51:09,622 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 5859 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 11344 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 13457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 11344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:51:09,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5859 Valid, 956 Invalid, 13457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 11344 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-04-01 23:51:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25418 states. [2023-04-01 23:51:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25418 to 23097. [2023-04-01 23:51:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23097 states, 22383 states have (on average 1.280302014922039) internal successors, (28657), 22485 states have internal predecessors, (28657), 92 states have call successors, (92), 92 states have call predecessors, (92), 621 states have return successors, (1845), 519 states have call predecessors, (1845), 91 states have call successors, (1845) [2023-04-01 23:51:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23097 states to 23097 states and 30594 transitions. [2023-04-01 23:51:10,216 INFO L78 Accepts]: Start accepts. Automaton has 23097 states and 30594 transitions. Word has length 161 [2023-04-01 23:51:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:51:10,218 INFO L495 AbstractCegarLoop]: Abstraction has 23097 states and 30594 transitions. [2023-04-01 23:51:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.833333333333332) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:51:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23097 states and 30594 transitions. [2023-04-01 23:51:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-01 23:51:10,220 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:51:10,220 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, 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] [2023-04-01 23:51:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 23:51:10,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:51:10,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:51:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1547764173, now seen corresponding path program 1 times [2023-04-01 23:51:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:51:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474538899] [2023-04-01 23:51:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:10,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:51:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:51:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:51:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:51:10,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:51:10,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474538899] [2023-04-01 23:51:10,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474538899] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:51:10,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:51:10,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:51:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351996878] [2023-04-01 23:51:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:51:10,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:51:10,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:51:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:51:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:51:10,565 INFO L87 Difference]: Start difference. First operand 23097 states and 30594 transitions. Second operand has 7 states, 6 states have (on average 27.0) internal successors, (162), 4 states have internal predecessors, (162), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:51:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:51:22,976 INFO L93 Difference]: Finished difference Result 71609 states and 98293 transitions. [2023-04-01 23:51:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:51:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 27.0) internal successors, (162), 4 states have internal predecessors, (162), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 168 [2023-04-01 23:51:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:51:23,142 INFO L225 Difference]: With dead ends: 71609 [2023-04-01 23:51:23,143 INFO L226 Difference]: Without dead ends: 48518 [2023-04-01 23:51:23,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:51:23,192 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 8119 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 11713 mSolverCounterSat, 2089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8119 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 13802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2089 IncrementalHoareTripleChecker+Valid, 11713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:51:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8119 Valid, 1047 Invalid, 13802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2089 Valid, 11713 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-04-01 23:51:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48518 states. [2023-04-01 23:51:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48518 to 45399. [2023-04-01 23:51:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45399 states, 43518 states have (on average 1.1893469368996736) internal successors, (51758), 43847 states have internal predecessors, (51758), 176 states have call successors, (176), 176 states have call predecessors, (176), 1704 states have return successors, (6069), 1375 states have call predecessors, (6069), 175 states have call successors, (6069) [2023-04-01 23:51:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45399 states to 45399 states and 58003 transitions. [2023-04-01 23:51:24,238 INFO L78 Accepts]: Start accepts. Automaton has 45399 states and 58003 transitions. Word has length 168 [2023-04-01 23:51:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:51:24,238 INFO L495 AbstractCegarLoop]: Abstraction has 45399 states and 58003 transitions. [2023-04-01 23:51:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 27.0) internal successors, (162), 4 states have internal predecessors, (162), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:51:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 45399 states and 58003 transitions. [2023-04-01 23:51:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-04-01 23:51:24,253 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:51:24,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:51:24,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:51:24,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:51:24,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:51:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1318600728, now seen corresponding path program 1 times [2023-04-01 23:51:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:51:24,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628584845] [2023-04-01 23:51:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:24,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:51:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:51:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:51:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:51:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:51:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:51:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:51:25,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:51:25,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628584845] [2023-04-01 23:51:25,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628584845] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:51:25,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584281791] [2023-04-01 23:51:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:25,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:51:25,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:51:25,805 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) [2023-04-01 23:51:25,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:51:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:26,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:51:26,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:51:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:51:26,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:51:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:51:26,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584281791] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:51:26,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:51:26,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:51:26,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973108360] [2023-04-01 23:51:26,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:51:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:51:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:51:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:51:26,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:51:26,732 INFO L87 Difference]: Start difference. First operand 45399 states and 58003 transitions. Second operand has 11 states, 11 states have (on average 79.81818181818181) internal successors, (878), 9 states have internal predecessors, (878), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:51:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:51:46,007 INFO L93 Difference]: Finished difference Result 173882 states and 245278 transitions. [2023-04-01 23:51:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 23:51:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 79.81818181818181) internal successors, (878), 9 states have internal predecessors, (878), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 731 [2023-04-01 23:51:46,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:51:46,745 INFO L225 Difference]: With dead ends: 173882 [2023-04-01 23:51:46,746 INFO L226 Difference]: Without dead ends: 128489 [2023-04-01 23:51:46,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1498 GetRequests, 1472 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:51:46,824 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 8115 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 19019 mSolverCounterSat, 4635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8115 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 23654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4635 IncrementalHoareTripleChecker+Valid, 19019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:51:46,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8115 Valid, 1586 Invalid, 23654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4635 Valid, 19019 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2023-04-01 23:51:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128489 states. [2023-04-01 23:51:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128489 to 123431. [2023-04-01 23:51:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123431 states, 118361 states have (on average 1.1383056919086523) internal successors, (134731), 119355 states have internal predecessors, (134731), 482 states have call successors, (482), 482 states have call predecessors, (482), 4587 states have return successors, (23922), 3593 states have call predecessors, (23922), 481 states have call successors, (23922) [2023-04-01 23:51:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123431 states to 123431 states and 159135 transitions. [2023-04-01 23:51:50,157 INFO L78 Accepts]: Start accepts. Automaton has 123431 states and 159135 transitions. Word has length 731 [2023-04-01 23:51:50,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:51:50,159 INFO L495 AbstractCegarLoop]: Abstraction has 123431 states and 159135 transitions. [2023-04-01 23:51:50,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 79.81818181818181) internal successors, (878), 9 states have internal predecessors, (878), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:51:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 123431 states and 159135 transitions. [2023-04-01 23:51:50,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2023-04-01 23:51:50,184 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:51:50,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:51:50,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:51:50,391 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,SelfDestructingSolverStorable5 [2023-04-01 23:51:50,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:51:50,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:51:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 98889541, now seen corresponding path program 1 times [2023-04-01 23:51:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:51:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270437696] [2023-04-01 23:51:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:51:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:51:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:51:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:51:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:51:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:51:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-04-01 23:51:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:51:51,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270437696] [2023-04-01 23:51:51,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270437696] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:51:51,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300841250] [2023-04-01 23:51:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:51,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:51:51,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:51:51,828 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) [2023-04-01 23:51:51,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:51:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:52,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:51:52,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:51:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-04-01 23:51:52,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:51:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-04-01 23:51:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300841250] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:51:52,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:51:52,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:51:52,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203710735] [2023-04-01 23:51:52,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:51:52,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:51:52,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:51:52,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:51:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:51:52,960 INFO L87 Difference]: Start difference. First operand 123431 states and 159135 transitions. Second operand has 12 states, 12 states have (on average 87.16666666666667) internal successors, (1046), 10 states have internal predecessors, (1046), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 23:52:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:52:18,483 INFO L93 Difference]: Finished difference Result 331039 states and 454634 transitions. [2023-04-01 23:52:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:52:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 87.16666666666667) internal successors, (1046), 10 states have internal predecessors, (1046), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 935 [2023-04-01 23:52:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:52:19,340 INFO L225 Difference]: With dead ends: 331039 [2023-04-01 23:52:19,340 INFO L226 Difference]: Without dead ends: 207614 [2023-04-01 23:52:19,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1912 GetRequests, 1887 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:52:19,522 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 14192 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 26572 mSolverCounterSat, 8152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14192 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 34724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8152 IncrementalHoareTripleChecker+Valid, 26572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:52:19,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14192 Valid, 1470 Invalid, 34724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8152 Valid, 26572 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2023-04-01 23:52:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207614 states. [2023-04-01 23:52:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207614 to 201224. [2023-04-01 23:52:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201224 states, 194029 states have (on average 1.1376701420921616) internal successors, (220741), 195467 states have internal predecessors, (220741), 800 states have call successors, (800), 800 states have call predecessors, (800), 6394 states have return successors, (47108), 4956 states have call predecessors, (47108), 799 states have call successors, (47108) [2023-04-01 23:52:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201224 states to 201224 states and 268649 transitions. [2023-04-01 23:52:24,095 INFO L78 Accepts]: Start accepts. Automaton has 201224 states and 268649 transitions. Word has length 935 [2023-04-01 23:52:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:52:24,096 INFO L495 AbstractCegarLoop]: Abstraction has 201224 states and 268649 transitions. [2023-04-01 23:52:24,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.16666666666667) internal successors, (1046), 10 states have internal predecessors, (1046), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 23:52:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 201224 states and 268649 transitions. [2023-04-01 23:52:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2023-04-01 23:52:24,129 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:52:24,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:52:24,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 23:52:24,335 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,SelfDestructingSolverStorable6 [2023-04-01 23:52:24,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:52:24,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:52:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 342718595, now seen corresponding path program 1 times [2023-04-01 23:52:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:52:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732616286] [2023-04-01 23:52:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:52:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:52:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:52:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:52:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:52:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:52:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2023-04-01 23:52:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 162 proven. 3 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-04-01 23:52:25,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:52:25,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732616286] [2023-04-01 23:52:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732616286] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:52:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365622006] [2023-04-01 23:52:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:52:25,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:52:25,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:52:25,900 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) [2023-04-01 23:52:25,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:52:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:26,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:52:26,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:52:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 665 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-04-01 23:52:26,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:52:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 395 proven. 164 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-04-01 23:52:28,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365622006] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:52:28,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:52:28,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-04-01 23:52:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40463121] [2023-04-01 23:52:28,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:52:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 23:52:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:52:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 23:52:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:52:28,023 INFO L87 Difference]: Start difference. First operand 201224 states and 268649 transitions. Second operand has 9 states, 9 states have (on average 131.33333333333334) internal successors, (1182), 7 states have internal predecessors, (1182), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:52:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:52:54,331 INFO L93 Difference]: Finished difference Result 510160 states and 749265 transitions. [2023-04-01 23:52:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:52:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 131.33333333333334) internal successors, (1182), 7 states have internal predecessors, (1182), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 953 [2023-04-01 23:52:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:52:55,990 INFO L225 Difference]: With dead ends: 510160 [2023-04-01 23:52:55,990 INFO L226 Difference]: Without dead ends: 308942 [2023-04-01 23:52:56,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1947 GetRequests, 1924 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-01 23:52:56,210 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 8300 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 27858 mSolverCounterSat, 4761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8308 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 32619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4761 IncrementalHoareTripleChecker+Valid, 27858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:52:56,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8308 Valid, 1297 Invalid, 32619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4761 Valid, 27858 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2023-04-01 23:52:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308942 states. [2023-04-01 23:53:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308942 to 305854. [2023-04-01 23:53:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305854 states, 296611 states have (on average 1.13467133720597) internal successors, (336556), 298397 states have internal predecessors, (336556), 1238 states have call successors, (1238), 1238 states have call predecessors, (1238), 8004 states have return successors, (75464), 6218 states have call predecessors, (75464), 1237 states have call successors, (75464) [2023-04-01 23:53:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305854 states to 305854 states and 413258 transitions. [2023-04-01 23:53:03,568 INFO L78 Accepts]: Start accepts. Automaton has 305854 states and 413258 transitions. Word has length 953 [2023-04-01 23:53:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:53:03,569 INFO L495 AbstractCegarLoop]: Abstraction has 305854 states and 413258 transitions. [2023-04-01 23:53:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 131.33333333333334) internal successors, (1182), 7 states have internal predecessors, (1182), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:53:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 305854 states and 413258 transitions. [2023-04-01 23:53:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2023-04-01 23:53:03,590 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:53:03,590 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:53:03,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:53:03,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:53:03,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:53:03,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:53:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1360143675, now seen corresponding path program 1 times [2023-04-01 23:53:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:53:03,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348912532] [2023-04-01 23:53:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:53:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:53:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:53:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:53:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:53:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:53:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-04-01 23:53:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 510 proven. 11 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-04-01 23:53:05,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:53:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348912532] [2023-04-01 23:53:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348912532] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:53:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676285420] [2023-04-01 23:53:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:53:05,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:53:05,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:53:05,697 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) [2023-04-01 23:53:05,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:53:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:53:05,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:53:05,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:53:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 516 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-04-01 23:53:06,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:53:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 516 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-04-01 23:53:06,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676285420] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:53:06,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:53:06,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 23:53:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710169494] [2023-04-01 23:53:06,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:53:06,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:53:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:53:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:53:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:53:06,540 INFO L87 Difference]: Start difference. First operand 305854 states and 413258 transitions. Second operand has 14 states, 14 states have (on average 61.285714285714285) internal successors, (858), 12 states have internal predecessors, (858), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:53:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:53:35,036 INFO L93 Difference]: Finished difference Result 686582 states and 942872 transitions. [2023-04-01 23:53:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 23:53:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 61.285714285714285) internal successors, (858), 12 states have internal predecessors, (858), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 970 [2023-04-01 23:53:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted.