/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/Problem04_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:40:21,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:40:21,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:40:21,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 20:40:21,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 20:40:21,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 20:40:21,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 20:40:21,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 20:40:21,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 20:40:21,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 20:40:21,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 20:40:21,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 20:40:21,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:40:21,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:40:21,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:40:21,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:40:21,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:40:21,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:40:21,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:40:21,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:40:21,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:40:21,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:40:21,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:40:21,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:40:21,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 20:40:21,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 20:40:21,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 20:40:21,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 20:40:21,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 20:40:21,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 20:40:21,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 20:40:21,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 20:40:21,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 20:40:21,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 20:40:21,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 20:40:21,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 20:40:21,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 20:40:21,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 20:40:21,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:40:21,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:40:21,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:40:21,820 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 20:40:21,855 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:40:21,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:40:21,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:40:21,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:40:21,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:40:21,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:40:21,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:40:21,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:40:21,858 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:40:21,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:40:21,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:40:21,860 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:40:21,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:40:21,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:40:21,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:40:21,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:40:21,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:40:21,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:40:21,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:40:21,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:40:21,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:40:21,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:40:21,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:40:21,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:40:21,862 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:40:21,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:40:21,862 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:40:21,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:40:22,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:40:22,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:40:22,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:40:22,099 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:40:22,100 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:40:22,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label24.c [2023-04-01 20:40:23,145 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:40:23,594 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:40:23,595 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label24.c [2023-04-01 20:40:23,628 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b3bb23d3/61265a7d84274d9d94785ca1e202e5c8/FLAGc99213142 [2023-04-01 20:40:23,641 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b3bb23d3/61265a7d84274d9d94785ca1e202e5c8 [2023-04-01 20:40:23,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:40:23,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:40:23,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:40:23,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:40:23,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:40:23,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:40:23" (1/1) ... [2023-04-01 20:40:23,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2000ee06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:23, skipping insertion in model container [2023-04-01 20:40:23,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:40:23" (1/1) ... [2023-04-01 20:40:23,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:40:23,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:40:24,703 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/Problem04_label24.c[182780,182793] [2023-04-01 20:40:24,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:40:24,735 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:40:25,215 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/Problem04_label24.c[182780,182793] [2023-04-01 20:40:25,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:40:25,242 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:40:25,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25 WrapperNode [2023-04-01 20:40:25,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:40:25,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:40:25,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:40:25,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:40:25,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:40:25,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:40:25,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:40:25,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:40:25,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (1/1) ... [2023-04-01 20:40:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:40:25,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:25,506 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 20:40:25,533 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 20:40:25,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:40:25,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:40:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:40:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:40:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:40:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:40:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:40:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:40:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:40:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:40:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:40:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:40:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:40:25,662 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:40:25,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:40:28,990 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:40:29,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:40:29,009 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:40:29,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:40:29 BoogieIcfgContainer [2023-04-01 20:40:29,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:40:29,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:40:29,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:40:29,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:40:29,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:40:23" (1/3) ... [2023-04-01 20:40:29,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc1ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:40:29, skipping insertion in model container [2023-04-01 20:40:29,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:40:25" (2/3) ... [2023-04-01 20:40:29,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc1ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:40:29, skipping insertion in model container [2023-04-01 20:40:29,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:40:29" (3/3) ... [2023-04-01 20:40:29,021 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label24.c [2023-04-01 20:40:29,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:40:29,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:40:29,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:40:29,125 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;@765165e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:40:29,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:40:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 20:40:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-04-01 20:40:29,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:29,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:29,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:29,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -261479117, now seen corresponding path program 1 times [2023-04-01 20:40:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28840403] [2023-04-01 20:40:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:33,021 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 20:40:33,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28840403] [2023-04-01 20:40:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28840403] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:33,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:40:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:40:33,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484347472] [2023-04-01 20:40:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:33,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:40:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:33,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:40:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:40:33,081 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 202.0) internal successors, (808), 3 states have internal predecessors, (808), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:40:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:38,623 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2023-04-01 20:40:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:40:38,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 202.0) internal successors, (808), 3 states have internal predecessors, (808), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 815 [2023-04-01 20:40:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:38,652 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:40:38,652 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:40:38,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:40:38,666 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2693 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5375 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 5375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:38,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 65 Invalid, 5834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 5375 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 20:40:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:40:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2023-04-01 20:40:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1664 states have (on average 1.8010817307692308) internal successors, (2997), 1666 states have internal predecessors, (2997), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:40:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2023-04-01 20:40:38,794 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 815 [2023-04-01 20:40:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:38,797 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2023-04-01 20:40:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 202.0) internal successors, (808), 3 states have internal predecessors, (808), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:40:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2023-04-01 20:40:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-04-01 20:40:38,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:38,819 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:38,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:40:38,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:38,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash 677540753, now seen corresponding path program 1 times [2023-04-01 20:40:38,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:38,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265649452] [2023-04-01 20:40:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265649452] [2023-04-01 20:40:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265649452] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:41,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:40:41,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:40:41,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42042971] [2023-04-01 20:40:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:41,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:40:41,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:40:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:40:41,233 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand has 8 states, 7 states have (on average 116.28571428571429) internal successors, (814), 5 states have internal predecessors, (814), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:40:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:47,334 INFO L93 Difference]: Finished difference Result 5170 states and 9293 transitions. [2023-04-01 20:40:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:40:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 116.28571428571429) internal successors, (814), 5 states have internal predecessors, (814), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 823 [2023-04-01 20:40:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:47,355 INFO L225 Difference]: With dead ends: 5170 [2023-04-01 20:40:47,355 INFO L226 Difference]: Without dead ends: 3487 [2023-04-01 20:40:47,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:40:47,360 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2754 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 7041 mSolverCounterSat, 1739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 7041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:47,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2754 Valid, 187 Invalid, 8780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1739 Valid, 7041 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-01 20:40:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2023-04-01 20:40:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3448. [2023-04-01 20:40:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3374 states have (on average 1.5500889152341435) internal successors, (5230), 3384 states have internal predecessors, (5230), 18 states have call successors, (18), 18 states have call predecessors, (18), 55 states have return successors, (127), 45 states have call predecessors, (127), 17 states have call successors, (127) [2023-04-01 20:40:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 5375 transitions. [2023-04-01 20:40:47,476 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 5375 transitions. Word has length 823 [2023-04-01 20:40:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:47,476 INFO L495 AbstractCegarLoop]: Abstraction has 3448 states and 5375 transitions. [2023-04-01 20:40:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 116.28571428571429) internal successors, (814), 5 states have internal predecessors, (814), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:40:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 5375 transitions. [2023-04-01 20:40:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2023-04-01 20:40:47,504 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:47,505 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:47,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:40:47,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:47,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:47,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1177019861, now seen corresponding path program 1 times [2023-04-01 20:40:47,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:47,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899752758] [2023-04-01 20:40:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:47,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899752758] [2023-04-01 20:40:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899752758] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:40:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:40:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471148275] [2023-04-01 20:40:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:40:48,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:48,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:40:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:40:48,562 INFO L87 Difference]: Start difference. First operand 3448 states and 5375 transitions. Second operand has 7 states, 6 states have (on average 136.0) internal successors, (816), 4 states have internal predecessors, (816), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:40:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:53,666 INFO L93 Difference]: Finished difference Result 10466 states and 16539 transitions. [2023-04-01 20:40:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:40:53,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 136.0) internal successors, (816), 4 states have internal predecessors, (816), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 825 [2023-04-01 20:40:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:53,694 INFO L225 Difference]: With dead ends: 10466 [2023-04-01 20:40:53,695 INFO L226 Difference]: Without dead ends: 7024 [2023-04-01 20:40:53,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:40:53,703 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 5141 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4931 mSolverCounterSat, 1588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5141 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 6519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1588 IncrementalHoareTripleChecker+Valid, 4931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:53,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5141 Valid, 87 Invalid, 6519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1588 Valid, 4931 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 20:40:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-04-01 20:40:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6954. [2023-04-01 20:40:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6785 states have (on average 1.3941046425939572) internal successors, (9459), 6814 states have internal predecessors, (9459), 34 states have call successors, (34), 34 states have call predecessors, (34), 134 states have return successors, (378), 105 states have call predecessors, (378), 33 states have call successors, (378) [2023-04-01 20:40:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 9871 transitions. [2023-04-01 20:40:53,934 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 9871 transitions. Word has length 825 [2023-04-01 20:40:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:53,935 INFO L495 AbstractCegarLoop]: Abstraction has 6954 states and 9871 transitions. [2023-04-01 20:40:53,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 136.0) internal successors, (816), 4 states have internal predecessors, (816), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:40:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 9871 transitions. [2023-04-01 20:40:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-04-01 20:40:53,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:53,956 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:40:53,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:53,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1991099231, now seen corresponding path program 1 times [2023-04-01 20:40:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919649961] [2023-04-01 20:40:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919649961] [2023-04-01 20:40:55,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919649961] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:55,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:40:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:40:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720736057] [2023-04-01 20:40:55,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:55,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:40:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:40:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:40:55,198 INFO L87 Difference]: Start difference. First operand 6954 states and 9871 transitions. Second operand has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 5 states have internal predecessors, (822), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:41:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:02,064 INFO L93 Difference]: Finished difference Result 27846 states and 41297 transitions. [2023-04-01 20:41:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:41:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 5 states have internal predecessors, (822), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 831 [2023-04-01 20:41:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:02,147 INFO L225 Difference]: With dead ends: 27846 [2023-04-01 20:41:02,147 INFO L226 Difference]: Without dead ends: 20898 [2023-04-01 20:41:02,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:41:02,173 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8095 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6797 mSolverCounterSat, 2384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8095 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 9181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2384 IncrementalHoareTripleChecker+Valid, 6797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:02,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8095 Valid, 129 Invalid, 9181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2384 Valid, 6797 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 20:41:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20898 states. [2023-04-01 20:41:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20898 to 19155. [2023-04-01 20:41:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19155 states, 18675 states have (on average 1.2895850066934404) internal successors, (24083), 18776 states have internal predecessors, (24083), 90 states have call successors, (90), 90 states have call predecessors, (90), 389 states have return successors, (2029), 288 states have call predecessors, (2029), 89 states have call successors, (2029) [2023-04-01 20:41:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19155 states to 19155 states and 26202 transitions. [2023-04-01 20:41:02,619 INFO L78 Accepts]: Start accepts. Automaton has 19155 states and 26202 transitions. Word has length 831 [2023-04-01 20:41:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:02,619 INFO L495 AbstractCegarLoop]: Abstraction has 19155 states and 26202 transitions. [2023-04-01 20:41:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 5 states have internal predecessors, (822), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:41:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19155 states and 26202 transitions. [2023-04-01 20:41:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2023-04-01 20:41:02,669 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:02,670 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 20:41:02,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:02,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash 74451285, now seen corresponding path program 1 times [2023-04-01 20:41:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160267453] [2023-04-01 20:41:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:41:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-01 20:41:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 171 proven. 52 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 20:41:04,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160267453] [2023-04-01 20:41:04,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160267453] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:04,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809108247] [2023-04-01 20:41:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:04,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:04,621 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 20:41:04,626 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 20:41:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:04,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:41:05,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-04-01 20:41:05,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 175 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 20:41:05,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809108247] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:05,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:05,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:41:05,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655101514] [2023-04-01 20:41:05,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:41:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:41:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:41:05,496 INFO L87 Difference]: Start difference. First operand 19155 states and 26202 transitions. Second operand has 13 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 11 states have internal predecessors, (1038), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:41:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:16,828 INFO L93 Difference]: Finished difference Result 57238 states and 82067 transitions. [2023-04-01 20:41:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-01 20:41:16,829 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 11 states have internal predecessors, (1038), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 971 [2023-04-01 20:41:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:16,978 INFO L225 Difference]: With dead ends: 57238 [2023-04-01 20:41:16,978 INFO L226 Difference]: Without dead ends: 38089 [2023-04-01 20:41:17,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1991 GetRequests, 1960 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2023-04-01 20:41:17,030 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 21063 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 9864 mSolverCounterSat, 7406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21063 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 17270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7406 IncrementalHoareTripleChecker+Valid, 9864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:17,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21063 Valid, 280 Invalid, 17270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7406 Valid, 9864 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-04-01 20:41:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38089 states. [2023-04-01 20:41:17,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38089 to 36269. [2023-04-01 20:41:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36269 states, 35465 states have (on average 1.216269561539546) internal successors, (43135), 35624 states have internal predecessors, (43135), 170 states have call successors, (170), 170 states have call predecessors, (170), 633 states have return successors, (4527), 474 states have call predecessors, (4527), 169 states have call successors, (4527) [2023-04-01 20:41:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36269 states to 36269 states and 47832 transitions. [2023-04-01 20:41:17,915 INFO L78 Accepts]: Start accepts. Automaton has 36269 states and 47832 transitions. Word has length 971 [2023-04-01 20:41:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:17,915 INFO L495 AbstractCegarLoop]: Abstraction has 36269 states and 47832 transitions. [2023-04-01 20:41:17,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 11 states have internal predecessors, (1038), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:41:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 36269 states and 47832 transitions. [2023-04-01 20:41:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2023-04-01 20:41:17,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:17,991 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:18,001 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 20:41:18,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:18,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:18,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1428027903, now seen corresponding path program 1 times [2023-04-01 20:41:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:18,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105881960] [2023-04-01 20:41:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:18,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-01 20:41:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-01 20:41:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-01 20:41:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 222 proven. 146 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-04-01 20:41:19,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105881960] [2023-04-01 20:41:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105881960] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602335043] [2023-04-01 20:41:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:19,639 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 20:41:19,642 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 20:41:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:20,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:41:20,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-04-01 20:41:20,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:41:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602335043] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:41:20,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:41:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:41:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052619710] [2023-04-01 20:41:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:41:20,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:41:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:41:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:41:20,257 INFO L87 Difference]: Start difference. First operand 36269 states and 47832 transitions. Second operand has 5 states, 5 states have (on average 176.6) internal successors, (883), 4 states have internal predecessors, (883), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:41:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:24,431 INFO L93 Difference]: Finished difference Result 101436 states and 137643 transitions. [2023-04-01 20:41:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:41:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 176.6) internal successors, (883), 4 states have internal predecessors, (883), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1049 [2023-04-01 20:41:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:24,677 INFO L225 Difference]: With dead ends: 101436 [2023-04-01 20:41:24,677 INFO L226 Difference]: Without dead ends: 65173 [2023-04-01 20:41:24,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:41:24,745 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 2881 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 2031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2881 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 6196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2031 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:24,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2881 Valid, 109 Invalid, 6196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2031 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 20:41:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65173 states. [2023-04-01 20:41:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65173 to 63386. [2023-04-01 20:41:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63386 states, 62160 states have (on average 1.1848938223938223) internal successors, (73653), 62388 states have internal predecessors, (73653), 298 states have call successors, (298), 298 states have call predecessors, (298), 927 states have return successors, (8518), 699 states have call predecessors, (8518), 297 states have call successors, (8518) [2023-04-01 20:41:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63386 states to 63386 states and 82469 transitions. [2023-04-01 20:41:26,581 INFO L78 Accepts]: Start accepts. Automaton has 63386 states and 82469 transitions. Word has length 1049 [2023-04-01 20:41:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 63386 states and 82469 transitions. [2023-04-01 20:41:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.6) internal successors, (883), 4 states have internal predecessors, (883), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:41:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 63386 states and 82469 transitions. [2023-04-01 20:41:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2023-04-01 20:41:26,676 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:26,677 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:26,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:41:26,885 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,SelfDestructingSolverStorable5 [2023-04-01 20:41:26,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:26,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1560188389, now seen corresponding path program 1 times [2023-04-01 20:41:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718039969] [2023-04-01 20:41:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:26,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:41:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-01 20:41:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-01 20:41:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-01 20:41:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 340 proven. 167 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-04-01 20:41:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718039969] [2023-04-01 20:41:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718039969] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396823629] [2023-04-01 20:41:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:29,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:29,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:29,282 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 20:41:29,284 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 20:41:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:41:29,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-04-01 20:41:29,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 344 proven. 167 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-04-01 20:41:30,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396823629] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:30,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:30,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:41:30,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858011252] [2023-04-01 20:41:30,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:30,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:41:30,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:41:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:41:30,054 INFO L87 Difference]: Start difference. First operand 63386 states and 82469 transitions. Second operand has 13 states, 13 states have (on average 90.0) internal successors, (1170), 11 states have internal predecessors, (1170), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:41:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:56,148 INFO L93 Difference]: Finished difference Result 244666 states and 328184 transitions. [2023-04-01 20:41:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 20:41:56,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 90.0) internal successors, (1170), 11 states have internal predecessors, (1170), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1145 [2023-04-01 20:41:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:56,743 INFO L225 Difference]: With dead ends: 244666 [2023-04-01 20:41:56,743 INFO L226 Difference]: Without dead ends: 181286 [2023-04-01 20:41:56,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2322 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 20:41:56,816 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 18020 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 30186 mSolverCounterSat, 9960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18031 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 40146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9960 IncrementalHoareTripleChecker+Valid, 30186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:56,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18031 Valid, 404 Invalid, 40146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9960 Valid, 30186 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2023-04-01 20:41:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181286 states. [2023-04-01 20:42:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181286 to 176951. [2023-04-01 20:42:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176951 states, 173395 states have (on average 1.1480031142766516) internal successors, (199058), 174076 states have internal predecessors, (199058), 934 states have call successors, (934), 826 states have call predecessors, (934), 2621 states have return successors, (27510), 2048 states have call predecessors, (27510), 933 states have call successors, (27510) [2023-04-01 20:42:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176951 states to 176951 states and 227502 transitions. [2023-04-01 20:42:01,826 INFO L78 Accepts]: Start accepts. Automaton has 176951 states and 227502 transitions. Word has length 1145 [2023-04-01 20:42:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:42:01,841 INFO L495 AbstractCegarLoop]: Abstraction has 176951 states and 227502 transitions. [2023-04-01 20:42:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.0) internal successors, (1170), 11 states have internal predecessors, (1170), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:42:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 176951 states and 227502 transitions. [2023-04-01 20:42:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2023-04-01 20:42:02,382 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:42:02,383 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:02,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 20:42:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:02,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:42:02,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:42:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2128779751, now seen corresponding path program 1 times [2023-04-01 20:42:02,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:42:02,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060934633] [2023-04-01 20:42:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:42:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:42:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:42:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:42:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-01 20:42:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 20:42:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 500 proven. 266 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-04-01 20:42:06,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:42:06,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060934633] [2023-04-01 20:42:06,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060934633] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:42:06,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884038238] [2023-04-01 20:42:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:06,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:06,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:42:06,874 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 20:42:06,887 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 20:42:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:07,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:42:07,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:42:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-04-01 20:42:08,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:42:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884038238] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:42:08,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:42:08,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:42:08,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740764267] [2023-04-01 20:42:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:42:08,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:42:08,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:42:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:42:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:42:08,363 INFO L87 Difference]: Start difference. First operand 176951 states and 227502 transitions. Second operand has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:42:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:42:13,320 INFO L93 Difference]: Finished difference Result 397477 states and 515065 transitions. [2023-04-01 20:42:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:42:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1330 [2023-04-01 20:42:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:42:14,236 INFO L225 Difference]: With dead ends: 397477 [2023-04-01 20:42:14,236 INFO L226 Difference]: Without dead ends: 221366 [2023-04-01 20:42:14,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1340 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:42:14,382 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 156 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:42:14,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1422 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 20:42:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221366 states. [2023-04-01 20:42:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221366 to 220528. [2023-04-01 20:42:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220528 states, 216484 states have (on average 1.1254873339369191) internal successors, (243650), 217198 states have internal predecessors, (243650), 1168 states have call successors, (1168), 1034 states have call predecessors, (1168), 2875 states have return successors, (31191), 2295 states have call predecessors, (31191), 1167 states have call successors, (31191) [2023-04-01 20:42:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220528 states to 220528 states and 276009 transitions. [2023-04-01 20:42:19,405 INFO L78 Accepts]: Start accepts. Automaton has 220528 states and 276009 transitions. Word has length 1330 [2023-04-01 20:42:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:42:19,406 INFO L495 AbstractCegarLoop]: Abstraction has 220528 states and 276009 transitions. [2023-04-01 20:42:19,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:42:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 220528 states and 276009 transitions. [2023-04-01 20:42:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1384 [2023-04-01 20:42:19,626 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:42:19,627 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:42:19,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:42:19,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:19,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:42:19,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:42:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -103116403, now seen corresponding path program 1 times [2023-04-01 20:42:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:42:19,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293452953] [2023-04-01 20:42:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:42:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:42:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:42:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:42:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:22,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-04-01 20:42:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2023-04-01 20:42:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 651 proven. 73 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-04-01 20:42:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:42:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293452953] [2023-04-01 20:42:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293452953] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:42:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191946814] [2023-04-01 20:42:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:22,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:22,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:42:22,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:42:22,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:42:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:23,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:42:23,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:42:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 744 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-04-01 20:42:23,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:42:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 656 proven. 68 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-04-01 20:42:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191946814] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:42:23,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:42:23,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 20:42:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198973300] [2023-04-01 20:42:23,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:42:23,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 20:42:23,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:42:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 20:42:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:42:23,550 INFO L87 Difference]: Start difference. First operand 220528 states and 276009 transitions. Second operand has 15 states, 15 states have (on average 90.0) internal successors, (1350), 13 states have internal predecessors, (1350), 5 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 20:42:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:42:44,227 INFO L93 Difference]: Finished difference Result 443430 states and 556783 transitions. [2023-04-01 20:42:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-04-01 20:42:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 90.0) internal successors, (1350), 13 states have internal predecessors, (1350), 5 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 1383 [2023-04-01 20:42:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:42:45,045 INFO L225 Difference]: With dead ends: 443430 [2023-04-01 20:42:45,045 INFO L226 Difference]: Without dead ends: 222027 [2023-04-01 20:42:45,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2920 GetRequests, 2837 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1066, Invalid=5906, Unknown=0, NotChecked=0, Total=6972 [2023-04-01 20:42:45,218 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 31962 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 19836 mSolverCounterSat, 6557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31962 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 26393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6557 IncrementalHoareTripleChecker+Valid, 19836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:42:45,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31962 Valid, 1090 Invalid, 26393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6557 Valid, 19836 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2023-04-01 20:42:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222027 states. [2023-04-01 20:42:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222027 to 214900. [2023-04-01 20:42:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214900 states, 210828 states have (on average 1.0899168990836132) internal successors, (229785), 211581 states have internal predecessors, (229785), 1137 states have call successors, (1137), 1006 states have call predecessors, (1137), 2934 states have return successors, (22712), 2312 states have call predecessors, (22712), 1136 states have call successors, (22712) [2023-04-01 20:42:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214900 states to 214900 states and 253634 transitions. [2023-04-01 20:42:49,331 INFO L78 Accepts]: Start accepts. Automaton has 214900 states and 253634 transitions. Word has length 1383 [2023-04-01 20:42:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:42:49,332 INFO L495 AbstractCegarLoop]: Abstraction has 214900 states and 253634 transitions. [2023-04-01 20:42:49,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 90.0) internal successors, (1350), 13 states have internal predecessors, (1350), 5 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 20:42:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 214900 states and 253634 transitions. [2023-04-01 20:42:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1533 [2023-04-01 20:42:49,798 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:42:49,799 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:49,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:42:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:50,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:42:50,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:42:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 833434109, now seen corresponding path program 1 times [2023-04-01 20:42:50,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:42:50,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240592396] [2023-04-01 20:42:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:50,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:42:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:42:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:42:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:42:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-01 20:42:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2023-04-01 20:42:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2023-04-01 20:42:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 699 proven. 463 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-04-01 20:42:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:42:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240592396] [2023-04-01 20:42:54,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240592396] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:42:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502257514] [2023-04-01 20:42:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:54,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:42:54,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:42:54,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:42:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:54,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:42:54,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:42:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 1250 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-04-01 20:42:55,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:42:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 898 proven. 214 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-04-01 20:42:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502257514] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:42:55,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:42:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:42:55,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126900611] [2023-04-01 20:42:55,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:42:55,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:42:55,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:42:55,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:42:55,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:42:55,486 INFO L87 Difference]: Start difference. First operand 214900 states and 253634 transitions. Second operand has 12 states, 12 states have (on average 124.16666666666667) internal successors, (1490), 10 states have internal predecessors, (1490), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:43:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:43:14,516 INFO L93 Difference]: Finished difference Result 514047 states and 614282 transitions. [2023-04-01 20:43:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:43:14,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 124.16666666666667) internal successors, (1490), 10 states have internal predecessors, (1490), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1532 [2023-04-01 20:43:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:43:15,572 INFO L225 Difference]: With dead ends: 514047 [2023-04-01 20:43:15,572 INFO L226 Difference]: Without dead ends: 299139 [2023-04-01 20:43:15,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3131 GetRequests, 3095 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:43:15,787 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 8997 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 22353 mSolverCounterSat, 3946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8999 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 26299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3946 IncrementalHoareTripleChecker+Valid, 22353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:43:15,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8999 Valid, 419 Invalid, 26299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3946 Valid, 22353 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-04-01 20:43:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299139 states. [2023-04-01 20:43:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299139 to 295279. [2023-04-01 20:43:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295279 states, 289423 states have (on average 1.0628699170418383) internal successors, (307619), 290537 states have internal predecessors, (307619), 1567 states have call successors, (1567), 1378 states have call predecessors, (1567), 4288 states have return successors, (26068), 3363 states have call predecessors, (26068), 1566 states have call successors, (26068) [2023-04-01 20:43:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295279 states to 295279 states and 335254 transitions. [2023-04-01 20:43:22,574 INFO L78 Accepts]: Start accepts. Automaton has 295279 states and 335254 transitions. Word has length 1532 [2023-04-01 20:43:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:43:22,575 INFO L495 AbstractCegarLoop]: Abstraction has 295279 states and 335254 transitions. [2023-04-01 20:43:22,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 124.16666666666667) internal successors, (1490), 10 states have internal predecessors, (1490), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:43:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 295279 states and 335254 transitions. [2023-04-01 20:43:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2980 [2023-04-01 20:43:23,390 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:43:23,391 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:23,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 20:43:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:43:23,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:43:23,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:43:23,602 INFO L85 PathProgramCache]: Analyzing trace with hash 472809673, now seen corresponding path program 1 times [2023-04-01 20:43:23,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:43:23,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382427937] [2023-04-01 20:43:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:43:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:43:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:28,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:43:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:43:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:43:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2023-04-01 20:43:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1577 [2023-04-01 20:43:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:43:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4405 backedges. 2128 proven. 360 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2023-04-01 20:43:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:43:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382427937] [2023-04-01 20:43:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382427937] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:43:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318116433] [2023-04-01 20:43:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:43:30,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:43:30,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:43:30,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:43:30,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 20:43:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:31,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 3739 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:43:31,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:43:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4405 backedges. 2149 proven. 0 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2023-04-01 20:43:31,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:43:31,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318116433] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:43:31,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:43:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:43:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743028656] [2023-04-01 20:43:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:43:31,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:43:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:43:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:43:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:43:31,933 INFO L87 Difference]: Start difference. First operand 295279 states and 335254 transitions. Second operand has 3 states, 3 states have (on average 513.6666666666666) internal successors, (1541), 3 states have internal predecessors, (1541), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-01 20:43:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:43:37,814 INFO L93 Difference]: Finished difference Result 588695 states and 668603 transitions. [2023-04-01 20:43:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:43:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 513.6666666666666) internal successors, (1541), 3 states have internal predecessors, (1541), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 2979 [2023-04-01 20:43:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:43:38,786 INFO L225 Difference]: With dead ends: 588695 [2023-04-01 20:43:38,787 INFO L226 Difference]: Without dead ends: 294256 [2023-04-01 20:43:38,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3008 GetRequests, 3002 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:43:38,997 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 151 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:43:38,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1197 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 20:43:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294256 states. [2023-04-01 20:43:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294256 to 292487. [2023-04-01 20:43:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292487 states, 286764 states have (on average 1.045891395014716) internal successors, (299924), 287839 states have internal predecessors, (299924), 1553 states have call successors, (1553), 1366 states have call predecessors, (1553), 4169 states have return successors, (19203), 3281 states have call predecessors, (19203), 1552 states have call successors, (19203) [2023-04-01 20:43:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292487 states to 292487 states and 320680 transitions. [2023-04-01 20:43:43,991 INFO L78 Accepts]: Start accepts. Automaton has 292487 states and 320680 transitions. Word has length 2979 [2023-04-01 20:43:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:43:43,993 INFO L495 AbstractCegarLoop]: Abstraction has 292487 states and 320680 transitions. [2023-04-01 20:43:43,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 513.6666666666666) internal successors, (1541), 3 states have internal predecessors, (1541), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-01 20:43:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 292487 states and 320680 transitions. [2023-04-01 20:43:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3219 [2023-04-01 20:43:44,811 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:43:44,813 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:43:44,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 20:43:45,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:43:45,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:43:45,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:43:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1182878161, now seen corresponding path program 1 times [2023-04-01 20:43:45,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:43:45,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377758781] [2023-04-01 20:43:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:43:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:43:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:43:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:43:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:43:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-01 20:43:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:43:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221