/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/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:58:41,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:58:41,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:58:41,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:58:41,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:58:41,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:58:41,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:58:41,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:58:41,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:58:41,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:58:41,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:58:41,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:58:41,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:58:41,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:58:41,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:58:41,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:58:41,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:58:41,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:58:41,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:58:41,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:58:41,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:58:41,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:58:41,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:58:41,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:58:41,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:58:41,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:58:41,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:58:41,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:58:41,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:58:41,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:58:41,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:58:41,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:58:41,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:58:41,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:58:41,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:58:41,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:58:41,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:58:41,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:58:41,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:58:41,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:58:41,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:58:41,522 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 22:58:41,540 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:58:41,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:58:41,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:58:41,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:58:41,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:58:41,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:58:41,541 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:58:41,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:58:41,541 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:58:41,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:58:41,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:58:41,543 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:58:41,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:58:41,543 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:58:41,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:58:41,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:58:41,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:58:41,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:58:41,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:58:41,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:58:41,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:58:41,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:58:41,545 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:58:41,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:58:41,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:58:41,546 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:58:41,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:58:41,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:58:41,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:58:41,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:58:41,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:58:41,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:58:41,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:58:41,746 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:58:41,747 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:58:41,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum04-1.i [2023-03-31 22:58:42,913 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:58:43,111 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:58:43,112 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum04-1.i [2023-03-31 22:58:43,117 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61d3920b6/e2bfd799c4764435b20ce5d3fdef83b6/FLAGd10130e54 [2023-03-31 22:58:43,129 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61d3920b6/e2bfd799c4764435b20ce5d3fdef83b6 [2023-03-31 22:58:43,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:58:43,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:58:43,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:58:43,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:58:43,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:58:43,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a212d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43, skipping insertion in model container [2023-03-31 22:58:43,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:58:43,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:58:43,289 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/loops/sum04-1.i[808,821] [2023-03-31 22:58:43,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:58:43,311 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:58:43,323 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/loops/sum04-1.i[808,821] [2023-03-31 22:58:43,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:58:43,338 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:58:43,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43 WrapperNode [2023-03-31 22:58:43,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:58:43,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:58:43,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:58:43,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:58:43,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:58:43,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:58:43,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:58:43,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:58:43,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (1/1) ... [2023-03-31 22:58:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:58:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:58:43,406 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 22:58:43,423 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 22:58:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:58:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:58:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:58:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:58:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:58:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:58:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:58:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:58:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:58:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:58:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:58:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:58:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:58:43,514 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:58:43,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:58:43,609 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:58:43,633 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:58:43,634 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 22:58:43,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:58:43 BoogieIcfgContainer [2023-03-31 22:58:43,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:58:43,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:58:43,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:58:43,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:58:43,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:58:43" (1/3) ... [2023-03-31 22:58:43,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df15f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:58:43, skipping insertion in model container [2023-03-31 22:58:43,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:43" (2/3) ... [2023-03-31 22:58:43,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df15f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:58:43, skipping insertion in model container [2023-03-31 22:58:43,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:58:43" (3/3) ... [2023-03-31 22:58:43,646 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2023-03-31 22:58:43,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:58:43,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:58:43,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:58:43,702 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;@695a82f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:58:43,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:58:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 22:58:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 22:58:43,712 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:43,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:43,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:43,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2079748076, now seen corresponding path program 1 times [2023-03-31 22:58:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:43,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490195715] [2023-03-31 22:58:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:43,919 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 22:58:43,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:58:43,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490195715] [2023-03-31 22:58:43,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490195715] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:58:43,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:58:43,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:58:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339874089] [2023-03-31 22:58:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:58:43,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:58:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:58:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:58:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:58:43,983 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 22:58:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:58:44,038 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-03-31 22:58:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:58:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10 [2023-03-31 22:58:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:58:44,045 INFO L225 Difference]: With dead ends: 29 [2023-03-31 22:58:44,045 INFO L226 Difference]: Without dead ends: 12 [2023-03-31 22:58:44,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:58:44,050 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:58:44,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:58:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-03-31 22:58:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-03-31 22:58:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 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 22:58:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-03-31 22:58:44,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2023-03-31 22:58:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:58:44,086 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-03-31 22:58:44,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 22:58:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-03-31 22:58:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:58:44,089 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:44,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:44,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:58:44,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:44,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash 28611769, now seen corresponding path program 1 times [2023-03-31 22:58:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765970984] [2023-03-31 22:58:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:44,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:58:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765970984] [2023-03-31 22:58:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765970984] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:58:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773290503] [2023-03-31 22:58:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:58:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:58:44,261 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 22:58:44,295 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 22:58:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:44,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 22:58:44,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:58:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:44,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:58:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773290503] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:58:44,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1619062586] [2023-03-31 22:58:44,467 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-03-31 22:58:44,467 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:58:44,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:58:44,476 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:58:44,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:58:44,589 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 22:58:44,682 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 25 for LOIs [2023-03-31 22:58:44,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:58:44,728 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:58:44,956 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '152#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:58:44,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:58:44,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:58:44,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-03-31 22:58:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444505929] [2023-03-31 22:58:44,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:58:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 22:58:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:58:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 22:58:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-03-31 22:58:44,960 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 22:58:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:58:44,990 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-03-31 22:58:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:58:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 11 [2023-03-31 22:58:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:58:44,991 INFO L225 Difference]: With dead ends: 20 [2023-03-31 22:58:44,991 INFO L226 Difference]: Without dead ends: 15 [2023-03-31 22:58:44,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-03-31 22:58:44,996 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:58:44,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:58:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-03-31 22:58:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-03-31 22:58:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 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 22:58:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-03-31 22:58:45,005 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2023-03-31 22:58:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:58:45,005 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-03-31 22:58:45,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 22:58:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-03-31 22:58:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 22:58:45,006 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:45,006 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:45,013 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 22:58:45,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:58:45,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:45,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash 213891884, now seen corresponding path program 2 times [2023-03-31 22:58:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:45,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241602752] [2023-03-31 22:58:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:45,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:58:45,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241602752] [2023-03-31 22:58:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241602752] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:58:45,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874483148] [2023-03-31 22:58:45,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 22:58:45,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:58:45,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:58:45,328 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 22:58:45,330 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 22:58:45,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 22:58:45,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 22:58:45,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:58:45,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:58:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:45,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:58:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:45,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874483148] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:58:45,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [545916723] [2023-03-31 22:58:45,468 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-03-31 22:58:45,468 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:58:45,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:58:45,469 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:58:45,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:58:45,514 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 22:58:45,567 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 25 for LOIs [2023-03-31 22:58:45,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:58:45,595 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:58:45,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '311#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:58:45,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:58:45,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:58:45,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-03-31 22:58:45,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34745837] [2023-03-31 22:58:45,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:58:45,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 22:58:45,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:58:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 22:58:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-03-31 22:58:45,769 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 22:58:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:58:45,788 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2023-03-31 22:58:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 22:58:45,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 14 [2023-03-31 22:58:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:58:45,790 INFO L225 Difference]: With dead ends: 24 [2023-03-31 22:58:45,790 INFO L226 Difference]: Without dead ends: 19 [2023-03-31 22:58:45,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-03-31 22:58:45,793 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:58:45,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:58:45,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-03-31 22:58:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-03-31 22:58:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 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 22:58:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-03-31 22:58:45,803 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2023-03-31 22:58:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:58:45,804 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-03-31 22:58:45,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 22:58:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-03-31 22:58:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 22:58:45,804 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:45,804 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:45,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 22:58:46,008 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,SelfDestructingSolverStorable2 [2023-03-31 22:58:46,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:46,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 896624236, now seen corresponding path program 3 times [2023-03-31 22:58:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226730109] [2023-03-31 22:58:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:58:46,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:58:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:58:46,079 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:58:46,079 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:58:46,080 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:58:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 22:58:46,085 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-03-31 22:58:46,087 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:58:46,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:58:46 BoogieIcfgContainer [2023-03-31 22:58:46,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:58:46,103 INFO L158 Benchmark]: Toolchain (without parser) took 2969.94ms. Allocated memory was 189.8MB in the beginning and 269.5MB in the end (delta: 79.7MB). Free memory was 143.8MB in the beginning and 127.2MB in the end (delta: 16.6MB). Peak memory consumption was 96.6MB. Max. memory is 8.0GB. [2023-03-31 22:58:46,103 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 135.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:58:46,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.74ms. Allocated memory is still 189.8MB. Free memory was 143.4MB in the beginning and 133.7MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 22:58:46,103 INFO L158 Benchmark]: Boogie Preprocessor took 30.57ms. Allocated memory is still 189.8MB. Free memory was 133.7MB in the beginning and 132.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 22:58:46,103 INFO L158 Benchmark]: RCFGBuilder took 268.38ms. Allocated memory is still 189.8MB. Free memory was 132.3MB in the beginning and 121.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 22:58:46,104 INFO L158 Benchmark]: TraceAbstraction took 2460.82ms. Allocated memory was 189.8MB in the beginning and 269.5MB in the end (delta: 79.7MB). Free memory was 120.4MB in the beginning and 127.2MB in the end (delta: -6.8MB). Peak memory consumption was 73.6MB. Max. memory is 8.0GB. [2023-03-31 22:58:46,105 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 189.8MB. Free memory is still 135.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.74ms. Allocated memory is still 189.8MB. Free memory was 143.4MB in the beginning and 133.7MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.57ms. Allocated memory is still 189.8MB. Free memory was 133.7MB in the beginning and 132.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 268.38ms. Allocated memory is still 189.8MB. Free memory was 132.3MB in the beginning and 121.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2460.82ms. Allocated memory was 189.8MB in the beginning and 269.5MB in the end (delta: 79.7MB). Free memory was 120.4MB in the beginning and 127.2MB in the end (delta: -6.8MB). Peak memory consumption was 73.6MB. 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int i, sn=0; [L24] i=1 VAL [i=1, sn=0] [L24] COND TRUE i<=8 [L25] COND TRUE i<4 [L26] sn = sn + (2) [L24] i++ VAL [i=2, sn=2] [L24] COND TRUE i<=8 [L25] COND TRUE i<4 [L26] sn = sn + (2) [L24] i++ VAL [i=3, sn=4] [L24] COND TRUE i<=8 [L25] COND TRUE i<4 [L26] sn = sn + (2) [L24] i++ VAL [i=4, sn=6] [L24] COND TRUE i<=8 [L25] COND FALSE !(i<4) [L24] i++ VAL [i=5, sn=6] [L24] COND TRUE i<=8 [L25] COND FALSE !(i<4) [L24] i++ VAL [i=6, sn=6] [L24] COND TRUE i<=8 [L25] COND FALSE !(i<4) [L24] i++ VAL [i=7, sn=6] [L24] COND TRUE i<=8 [L25] COND FALSE !(i<4) [L24] i++ VAL [i=8, sn=6] [L24] COND TRUE i<=8 [L25] COND FALSE !(i<4) [L24] i++ VAL [i=9, sn=6] [L24] COND FALSE !(i<=8) VAL [i=9, sn=6] [L28] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) VAL [\old(cond)=0] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 30 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 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 RESULT: Ultimate proved your program to be incorrect! [2023-03-31 22:58:46,117 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...