/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/eca-rers2012/Problem01_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:12:05,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:12:05,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:12:05,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:12:05,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:12:06,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:12:06,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:12:06,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:12:06,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:12:06,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:12:06,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:12:06,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:12:06,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:12:06,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:12:06,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:12:06,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:12:06,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:12:06,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:12:06,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:12:06,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:12:06,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:12:06,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:12:06,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:12:06,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:12:06,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 21:12:06,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 21:12:06,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 21:12:06,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 21:12:06,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 21:12:06,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 21:12:06,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:12:06,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:12:06,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:12:06,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:12:06,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:12:06,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:12:06,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:12:06,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:12:06,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:12:06,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:12:06,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:12:06,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 21:12:06,048 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:12:06,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:12:06,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:12:06,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:12:06,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:12:06,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:12:06,050 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:12:06,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:12:06,050 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:12:06,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:12:06,051 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:12:06,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:12:06,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:12:06,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:12:06,051 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:12:06,051 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:12:06,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:12:06,052 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:12:06,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:12:06,053 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:12:06,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:12:06,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:12:06,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:12:06,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:12:06,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:12:06,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:12:06,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:12:06,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:12:06,055 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:12:06,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:12:06,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:12:06,055 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:12:06,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:12:06,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:12:06,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:12:06,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:12:06,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:12:06,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:12:06,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:12:06,276 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:12:06,276 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:12:06,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2023-03-31 21:12:07,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:12:07,757 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:12:07,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2023-03-31 21:12:07,768 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819548b40/5943dd2cad824471a7b4de44e3fa948d/FLAG489455165 [2023-03-31 21:12:07,781 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819548b40/5943dd2cad824471a7b4de44e3fa948d [2023-03-31 21:12:07,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:12:07,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:12:07,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:12:07,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:12:07,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:12:07,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:12:07" (1/1) ... [2023-03-31 21:12:07,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b507f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:07, skipping insertion in model container [2023-03-31 21:12:07,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:12:07" (1/1) ... [2023-03-31 21:12:07,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:12:07,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:12:08,095 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/Problem01_label51.c[18730,18743] [2023-03-31 21:12:08,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:12:08,131 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:12:08,239 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/Problem01_label51.c[18730,18743] [2023-03-31 21:12:08,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:12:08,269 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:12:08,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08 WrapperNode [2023-03-31 21:12:08,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:12:08,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:12:08,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:12:08,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:12:08,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,376 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:12:08,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:12:08,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:12:08,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:12:08,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (1/1) ... [2023-03-31 21:12:08,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:12:08,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:12:08,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 21:12:08,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 21:12:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:12:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:12:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:12:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-31 21:12:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:12:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-31 21:12:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:12:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:12:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:12:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:12:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:12:08,547 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:12:08,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:12:09,540 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:12:09,767 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:12:09,767 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 21:12:09,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:12:09 BoogieIcfgContainer [2023-03-31 21:12:09,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:12:09,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:12:09,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:12:09,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:12:09,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:12:07" (1/3) ... [2023-03-31 21:12:09,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bbfd95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:12:09, skipping insertion in model container [2023-03-31 21:12:09,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:12:08" (2/3) ... [2023-03-31 21:12:09,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bbfd95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:12:09, skipping insertion in model container [2023-03-31 21:12:09,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:12:09" (3/3) ... [2023-03-31 21:12:09,782 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label51.c [2023-03-31 21:12:09,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:12:09,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:12:09,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:12:09,863 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=FINITE_AUTOMATA, 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;@37832dcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:12:09,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:12:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.8974358974358974) internal successors, (148), 79 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:12:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-03-31 21:12:09,879 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:09,879 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] [2023-03-31 21:12:09,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:09,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1124016003, now seen corresponding path program 1 times [2023-03-31 21:12:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:09,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780857996] [2023-03-31 21:12:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:12:10,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780857996] [2023-03-31 21:12:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780857996] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:12:10,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:12:10,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 21:12:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720735487] [2023-03-31 21:12:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:12:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:12:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:12:10,609 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.8974358974358974) internal successors, (148), 79 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:12:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:10,988 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2023-03-31 21:12:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:12:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2023-03-31 21:12:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:10,999 INFO L225 Difference]: With dead ends: 246 [2023-03-31 21:12:10,999 INFO L226 Difference]: Without dead ends: 157 [2023-03-31 21:12:11,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 21:12:11,005 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:11,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 21:12:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-03-31 21:12:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-03-31 21:12:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.8926174496644295) internal successors, (282), 149 states have internal predecessors, (282), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-31 21:12:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 291 transitions. [2023-03-31 21:12:11,080 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 291 transitions. Word has length 77 [2023-03-31 21:12:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:11,081 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 291 transitions. [2023-03-31 21:12:11,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:12:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 291 transitions. [2023-03-31 21:12:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-03-31 21:12:11,086 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:11,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:12:11,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 21:12:11,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:11,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:11,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1608711675, now seen corresponding path program 1 times [2023-03-31 21:12:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:11,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543047017] [2023-03-31 21:12:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:12:11,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:11,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543047017] [2023-03-31 21:12:11,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543047017] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:12:11,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:12:11,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 21:12:11,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441688160] [2023-03-31 21:12:11,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:11,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 21:12:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 21:12:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 21:12:11,603 INFO L87 Difference]: Start difference. First operand 157 states and 291 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 21:12:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:12,074 INFO L93 Difference]: Finished difference Result 477 states and 896 transitions. [2023-03-31 21:12:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 21:12:12,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2023-03-31 21:12:12,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:12,078 INFO L225 Difference]: With dead ends: 477 [2023-03-31 21:12:12,078 INFO L226 Difference]: Without dead ends: 325 [2023-03-31 21:12:12,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-31 21:12:12,080 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:12,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 49 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 21:12:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-03-31 21:12:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2023-03-31 21:12:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 300 states have (on average 1.6033333333333333) internal successors, (481), 305 states have internal predecessors, (481), 6 states have call successors, (6), 6 states have call predecessors, (6), 10 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-03-31 21:12:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 507 transitions. [2023-03-31 21:12:12,099 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 507 transitions. Word has length 94 [2023-03-31 21:12:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:12,100 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 507 transitions. [2023-03-31 21:12:12,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 21:12:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 507 transitions. [2023-03-31 21:12:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-03-31 21:12:12,103 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:12,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:12:12,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 21:12:12,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:12,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash -688643653, now seen corresponding path program 1 times [2023-03-31 21:12:12,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:12,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191596371] [2023-03-31 21:12:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:12:12,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:12,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191596371] [2023-03-31 21:12:12,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191596371] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:12:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191503953] [2023-03-31 21:12:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:12,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:12:12,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:12:12,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 21:12:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:12,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 21:12:12,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:12:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 21:12:12,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:12:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191503953] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:12:12,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:12:12,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 21:12:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172089682] [2023-03-31 21:12:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 21:12:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:12,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 21:12:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 21:12:12,656 INFO L87 Difference]: Start difference. First operand 317 states and 507 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:12:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:13,061 INFO L93 Difference]: Finished difference Result 811 states and 1363 transitions. [2023-03-31 21:12:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 21:12:13,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 107 [2023-03-31 21:12:13,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:13,065 INFO L225 Difference]: With dead ends: 811 [2023-03-31 21:12:13,065 INFO L226 Difference]: Without dead ends: 499 [2023-03-31 21:12:13,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 21:12:13,068 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 235 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:13,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 37 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 21:12:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-03-31 21:12:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2023-03-31 21:12:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 450 states have (on average 1.548888888888889) internal successors, (697), 459 states have internal predecessors, (697), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2023-03-31 21:12:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 749 transitions. [2023-03-31 21:12:13,096 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 749 transitions. Word has length 107 [2023-03-31 21:12:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:13,097 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 749 transitions. [2023-03-31 21:12:13,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 21:12:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 749 transitions. [2023-03-31 21:12:13,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-03-31 21:12:13,100 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:13,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2023-03-31 21:12:13,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 21:12:13,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:13,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:13,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash 135050439, now seen corresponding path program 1 times [2023-03-31 21:12:13,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:13,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654367479] [2023-03-31 21:12:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:12:13,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654367479] [2023-03-31 21:12:13,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654367479] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:12:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975612391] [2023-03-31 21:12:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:12:13,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:12:13,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 21:12:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:13,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 21:12:13,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:12:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 21:12:14,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:12:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975612391] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:12:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:12:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-31 21:12:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939765575] [2023-03-31 21:12:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:12:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:12:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:12:14,029 INFO L87 Difference]: Start difference. First operand 475 states and 749 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:12:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:14,284 INFO L93 Difference]: Finished difference Result 1178 states and 1928 transitions. [2023-03-31 21:12:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:12:14,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 113 [2023-03-31 21:12:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:14,288 INFO L225 Difference]: With dead ends: 1178 [2023-03-31 21:12:14,288 INFO L226 Difference]: Without dead ends: 708 [2023-03-31 21:12:14,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:12:14,290 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:14,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 21:12:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-03-31 21:12:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 631. [2023-03-31 21:12:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 599 states have (on average 1.4624373956594323) internal successors, (876), 611 states have internal predecessors, (876), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (77), 9 states have call predecessors, (77), 9 states have call successors, (77) [2023-03-31 21:12:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 963 transitions. [2023-03-31 21:12:14,314 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 963 transitions. Word has length 113 [2023-03-31 21:12:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:14,314 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 963 transitions. [2023-03-31 21:12:14,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:12:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 963 transitions. [2023-03-31 21:12:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-03-31 21:12:14,317 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:14,317 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:12:14,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 21:12:14,524 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,SelfDestructingSolverStorable3 [2023-03-31 21:12:14,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:14,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1721625621, now seen corresponding path program 1 times [2023-03-31 21:12:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748267838] [2023-03-31 21:12:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:12:14,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:14,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748267838] [2023-03-31 21:12:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748267838] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:12:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243760548] [2023-03-31 21:12:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:14,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:12:14,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:12:14,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 21:12:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:15,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-31 21:12:15,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:12:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 21:12:15,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:12:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243760548] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:12:15,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:12:15,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-31 21:12:15,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281575665] [2023-03-31 21:12:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:15,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:12:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:12:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:12:15,215 INFO L87 Difference]: Start difference. First operand 631 states and 963 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:12:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:15,511 INFO L93 Difference]: Finished difference Result 1642 states and 2636 transitions. [2023-03-31 21:12:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:12:15,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 130 [2023-03-31 21:12:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:15,518 INFO L225 Difference]: With dead ends: 1642 [2023-03-31 21:12:15,518 INFO L226 Difference]: Without dead ends: 939 [2023-03-31 21:12:15,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:12:15,521 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:15,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 21:12:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-03-31 21:12:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 785. [2023-03-31 21:12:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 747 states have (on average 1.3172690763052208) internal successors, (984), 761 states have internal predecessors, (984), 12 states have call successors, (12), 12 states have call predecessors, (12), 25 states have return successors, (97), 11 states have call predecessors, (97), 11 states have call successors, (97) [2023-03-31 21:12:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1093 transitions. [2023-03-31 21:12:15,555 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1093 transitions. Word has length 130 [2023-03-31 21:12:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:15,557 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1093 transitions. [2023-03-31 21:12:15,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:12:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1093 transitions. [2023-03-31 21:12:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-03-31 21:12:15,560 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:15,560 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:12:15,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 21:12:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:15,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:15,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash -298277725, now seen corresponding path program 1 times [2023-03-31 21:12:15,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300298401] [2023-03-31 21:12:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 83 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 21:12:16,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:16,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300298401] [2023-03-31 21:12:16,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300298401] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:12:16,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231379357] [2023-03-31 21:12:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:16,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:12:16,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 21:12:16,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 21:12:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:16,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-31 21:12:16,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:12:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 21:12:16,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:12:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 21:12:16,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231379357] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-31 21:12:16,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 21:12:16,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2023-03-31 21:12:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804148924] [2023-03-31 21:12:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:16,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 21:12:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 21:12:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 21:12:16,890 INFO L87 Difference]: Start difference. First operand 785 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 21:12:17,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:17,191 INFO L93 Difference]: Finished difference Result 1573 states and 2203 transitions. [2023-03-31 21:12:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 21:12:17,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 166 [2023-03-31 21:12:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:17,195 INFO L225 Difference]: With dead ends: 1573 [2023-03-31 21:12:17,195 INFO L226 Difference]: Without dead ends: 793 [2023-03-31 21:12:17,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 325 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-03-31 21:12:17,197 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 140 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:17,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 34 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 21:12:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-03-31 21:12:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-03-31 21:12:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 751 states have (on average 1.2276964047936085) internal successors, (922), 769 states have internal predecessors, (922), 12 states have call successors, (12), 12 states have call predecessors, (12), 29 states have return successors, (89), 11 states have call predecessors, (89), 11 states have call successors, (89) [2023-03-31 21:12:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1023 transitions. [2023-03-31 21:12:17,225 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1023 transitions. Word has length 166 [2023-03-31 21:12:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:17,225 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1023 transitions. [2023-03-31 21:12:17,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 21:12:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1023 transitions. [2023-03-31 21:12:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-03-31 21:12:17,229 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:12:17,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:12:17,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 21:12:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:17,436 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:12:17,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:12:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash 942904173, now seen corresponding path program 1 times [2023-03-31 21:12:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:12:17,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040442089] [2023-03-31 21:12:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:12:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 95 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-03-31 21:12:17,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:12:17,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040442089] [2023-03-31 21:12:17,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040442089] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 21:12:17,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719298752] [2023-03-31 21:12:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:12:17,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:17,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:12:17,992 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) [2023-03-31 21:12:17,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 21:12:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:12:18,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 21:12:18,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:12:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-03-31 21:12:18,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:12:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719298752] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:12:18,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 21:12:18,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-31 21:12:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069584756] [2023-03-31 21:12:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:12:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 21:12:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:12:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 21:12:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:12:18,234 INFO L87 Difference]: Start difference. First operand 793 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:12:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:12:18,486 INFO L93 Difference]: Finished difference Result 2201 states and 2914 transitions. [2023-03-31 21:12:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 21:12:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 181 [2023-03-31 21:12:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:12:18,487 INFO L225 Difference]: With dead ends: 2201 [2023-03-31 21:12:18,487 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 21:12:18,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 21:12:18,491 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 21:12:18,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 140 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 21:12:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 21:12:18,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 21:12:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 21:12:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 21:12:18,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2023-03-31 21:12:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:12:18,492 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 21:12:18,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 21:12:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 21:12:18,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 21:12:18,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 21:12:18,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 21:12:18,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:12:18,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 21:12:19,519 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-03-31 21:12:19,519 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-03-31 21:12:19,520 INFO L895 garLoopResultBuilder]: At program point L601(line 601) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse3 (<= ~a16~0 5)) (.cse2 (= ~a7~0 1)) (.cse1 (not (= 14 ~a8~0)))) (or (and .cse0 (<= ~a16~0 4)) (and .cse0 .cse1) (< 0 |old(~a7~0)|) (and .cse2 .cse3) (not (= |old(~a21~0)| 1)) (and .cse0 (<= ~a20~0 0) .cse3) (and .cse2 .cse1) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|))) [2023-03-31 21:12:19,520 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 587 604) no Hoare annotation was computed. [2023-03-31 21:12:19,520 INFO L899 garLoopResultBuilder]: For program point L601-1(line 601) no Hoare annotation was computed. [2023-03-31 21:12:19,520 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-03-31 21:12:19,521 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse3 (<= ~a16~0 5)) (.cse2 (= ~a7~0 1)) (.cse1 (not (= 14 ~a8~0)))) (or (and .cse0 (<= ~a16~0 4)) (and .cse0 .cse1) (< 0 |old(~a7~0)|) (and .cse2 .cse3) (not (= |old(~a21~0)| 1)) (and .cse0 (<= ~a20~0 0) .cse3) (and .cse2 .cse1) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|))) [2023-03-31 21:12:19,521 INFO L899 garLoopResultBuilder]: For program point L593-3(lines 587 604) no Hoare annotation was computed. [2023-03-31 21:12:19,521 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 587 604) the Hoare annotation is: (or (< 0 |old(~a7~0)|) (not (= |old(~a21~0)| 1)) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|) (and (<= ~a7~0 0) (<= ~a16~0 |old(~a16~0)|) (= ~a21~0 1) (= ~a17~0 1) (not (= 14 ~a8~0)))) [2023-03-31 21:12:19,522 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (or (<= 1 |old(~a7~0)|) (< ~a7~0 1)) (= ~a21~0 |old(~a21~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a17~0 |old(~a17~0)|)) [2023-03-31 21:12:19,522 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:12:19,522 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-03-31 21:12:19,522 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-03-31 21:12:19,522 INFO L899 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:12:19,525 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-03-31 21:12:19,525 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-03-31 21:12:19,525 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-03-31 21:12:19,525 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-03-31 21:12:19,525 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-03-31 21:12:19,526 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-03-31 21:12:19,526 INFO L899 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:12:19,526 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-03-31 21:12:19,526 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-03-31 21:12:19,527 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-03-31 21:12:19,527 INFO L899 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2023-03-31 21:12:19,527 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-03-31 21:12:19,527 INFO L899 garLoopResultBuilder]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 504) no Hoare annotation was computed. [2023-03-31 21:12:19,527 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-03-31 21:12:19,528 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-03-31 21:12:19,529 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-03-31 21:12:19,529 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-03-31 21:12:19,529 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point calculate_outputFINAL(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point calculate_outputEXIT(lines 40 585) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-03-31 21:12:19,561 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-03-31 21:12:19,562 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-03-31 21:12:19,563 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-03-31 21:12:19,563 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-03-31 21:12:19,563 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-03-31 21:12:19,563 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-03-31 21:12:19,563 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-03-31 21:12:19,563 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-03-31 21:12:19,564 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-03-31 21:12:19,564 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-03-31 21:12:19,564 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-03-31 21:12:19,564 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 40 585) the Hoare annotation is: (let ((.cse7 (< 5 |old(~a16~0)|)) (.cse11 (= 14 |old(~a8~0)|)) (.cse14 (not (= |old(~a7~0)| 1)))) (let ((.cse8 (and (or .cse7 .cse14) (or .cse11 .cse14))) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a7~0 0)) (.cse2 (= ~a21~0 |old(~a21~0)|)) (.cse9 (<= ~a16~0 |old(~a16~0)|)) (.cse3 (= ~a17~0 |old(~a17~0)|)) (.cse1 (<= ~a20~0 0)) (.cse5 (< 0 |old(~a7~0)|)) (.cse6 (< 0 |old(~a20~0)|)) (.cse13 (< 4 |old(~a16~0)|)) (.cse10 (not (= 14 ~a8~0)))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4) .cse5 .cse6 .cse7) (or .cse1 .cse8 .cse6) (or .cse5 (and .cse0 .cse2 .cse9 .cse3 .cse10) .cse11) (let ((.cse12 (= ~a7~0 1))) (or .cse8 (and .cse2 .cse9 .cse3 .cse12 .cse10) (and .cse2 .cse9 .cse3 .cse12 .cse4))) (or .cse5 .cse13 (and .cse0 .cse2 .cse9 .cse3)) (or .cse1 .cse5 .cse6 .cse11) (or (not (= |old(~a21~0)| 1)) .cse13 .cse10 .cse11 (not (= |old(~a17~0)| 1)) .cse14)))) [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-03-31 21:12:19,566 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-03-31 21:12:19,567 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-03-31 21:12:19,567 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-03-31 21:12:19,567 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-03-31 21:12:19,567 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:12:19,567 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= ~a21~0 1) (= ~a17~0 1) (<= ~a16~0 5) (not (= 14 ~a8~0))) [2023-03-31 21:12:19,567 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 21:12:19,567 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 21:12:19,570 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:12:19,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 21:12:19,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 09:12:19 BoogieIcfgContainer [2023-03-31 21:12:19,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 21:12:19,595 INFO L158 Benchmark]: Toolchain (without parser) took 11809.87ms. Allocated memory was 300.9MB in the beginning and 449.8MB in the end (delta: 148.9MB). Free memory was 255.2MB in the beginning and 411.9MB in the end (delta: -156.7MB). Peak memory consumption was 249.6MB. Max. memory is 8.0GB. [2023-03-31 21:12:19,595 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 21:12:19,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.79ms. Allocated memory is still 300.9MB. Free memory was 254.8MB in the beginning and 227.2MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-03-31 21:12:19,596 INFO L158 Benchmark]: Boogie Preprocessor took 116.19ms. Allocated memory is still 300.9MB. Free memory was 227.2MB in the beginning and 222.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-03-31 21:12:19,596 INFO L158 Benchmark]: RCFGBuilder took 1381.98ms. Allocated memory is still 300.9MB. Free memory was 222.7MB in the beginning and 162.0MB in the end (delta: 60.6MB). Peak memory consumption was 62.2MB. Max. memory is 8.0GB. [2023-03-31 21:12:19,597 INFO L158 Benchmark]: TraceAbstraction took 9821.13ms. Allocated memory was 300.9MB in the beginning and 449.8MB in the end (delta: 148.9MB). Free memory was 161.5MB in the beginning and 411.9MB in the end (delta: -250.4MB). Peak memory consumption was 154.9MB. Max. memory is 8.0GB. [2023-03-31 21:12:19,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.79ms. Allocated memory is still 300.9MB. Free memory was 254.8MB in the beginning and 227.2MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 116.19ms. Allocated memory is still 300.9MB. Free memory was 227.2MB in the beginning and 222.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1381.98ms. Allocated memory is still 300.9MB. Free memory was 222.7MB in the beginning and 162.0MB in the end (delta: 60.6MB). Peak memory consumption was 62.2MB. Max. memory is 8.0GB. * TraceAbstraction took 9821.13ms. Allocated memory was 300.9MB in the beginning and 449.8MB in the end (delta: 148.9MB). Free memory was 161.5MB in the beginning and 411.9MB in the end (delta: -250.4MB). Peak memory consumption was 154.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 504]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 682 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 682 mSDsluCounter, 622 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 127 mSDsCounter, 581 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2028 IncrementalHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 581 mSolverCounterUnsat, 495 mSDtfsCounter, 2028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 904 GetRequests, 865 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=793occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 263 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 66 PreInvPairs, 104 NumberOfFragments, 368 HoareAnnotationTreeSize, 66 FomulaSimplifications, 448 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2037 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1565 NumberOfCodeBlocks, 1565 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1718 ConstructedInterpolants, 0 QuantifiedInterpolants, 3792 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2462 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 828/908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a7 <= 0 && a16 <= 4) || (a7 <= 0 && !(14 == a8))) || 0 < \old(a7)) || (a7 == 1 && a16 <= 5)) || !(\old(a21) == 1)) || ((a7 <= 0 && a20 <= 0) && a16 <= 5)) || (a7 == 1 && !(14 == a8))) || 14 == \old(a8)) || !(\old(a17) == 1)) || 5 < \old(a16) RESULT: Ultimate proved your program to be correct! [2023-03-31 21:12:19,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...