/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/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:50:47,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:50:47,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:50:47,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:50:47,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:50:47,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:50:47,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:50:47,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:50:47,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:50:47,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:50:47,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:50:47,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:50:47,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:50:47,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:50:47,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:50:47,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:50:47,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:50:47,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:50:47,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:50:47,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:50:47,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:50:47,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:50:47,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:50:47,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:50:47,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:50:47,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:50:47,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:50:47,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:50:47,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:50:47,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:50:47,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:50:47,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:50:47,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:50:47,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:50:47,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:50:47,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:50:47,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:50:47,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:50:47,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:50:47,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:50:47,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:50:47,405 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 22:50:47,429 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:50:47,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:50:47,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:50:47,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:50:47,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:50:47,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:50:47,430 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:50:47,431 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:50:47,431 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:50:47,431 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:50:47,431 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:50:47,431 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:50:47,432 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:50:47,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:50:47,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:50:47,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:50:47,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:50:47,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:50:47,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:50:47,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:50:47,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:50:47,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:50:47,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:50:47,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:50:47,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:50:47,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:50:47,642 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:50:47,642 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:50:47,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-token-2.i [2023-03-31 22:50:48,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:50:48,978 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:50:48,978 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i [2023-03-31 22:50:48,985 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f790a855/5eadafa39ae543e8bce1cace180c197a/FLAGca5503551 [2023-03-31 22:50:48,995 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f790a855/5eadafa39ae543e8bce1cace180c197a [2023-03-31 22:50:48,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:50:48,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:50:48,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:50:48,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:50:49,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:50:49,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:50:48" (1/1) ... [2023-03-31 22:50:49,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc3d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49, skipping insertion in model container [2023-03-31 22:50:49,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:50:48" (1/1) ... [2023-03-31 22:50:49,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:50:49,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:50:49,251 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/forester-heap/dll-token-2.i[22229,22242] [2023-03-31 22:50:49,265 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/forester-heap/dll-token-2.i[22398,22411] [2023-03-31 22:50:49,267 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/forester-heap/dll-token-2.i[22489,22502] [2023-03-31 22:50:49,268 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/forester-heap/dll-token-2.i[22571,22584] [2023-03-31 22:50:49,269 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/forester-heap/dll-token-2.i[22649,22662] [2023-03-31 22:50:49,270 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/forester-heap/dll-token-2.i[22795,22808] [2023-03-31 22:50:49,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:50:49,287 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:50:49,312 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/forester-heap/dll-token-2.i[22229,22242] [2023-03-31 22:50:49,314 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/forester-heap/dll-token-2.i[22398,22411] [2023-03-31 22:50:49,315 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/forester-heap/dll-token-2.i[22489,22502] [2023-03-31 22:50:49,315 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/forester-heap/dll-token-2.i[22571,22584] [2023-03-31 22:50:49,317 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/forester-heap/dll-token-2.i[22649,22662] [2023-03-31 22:50:49,318 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2023-03-31 22:50:49,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:50:49,338 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:50:49,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49 WrapperNode [2023-03-31 22:50:49,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:50:49,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:50:49,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:50:49,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:50:49,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,381 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:50:49,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:50:49,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:50:49,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:50:49,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (1/1) ... [2023-03-31 22:50:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:50:49,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:50:49,421 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 22:50:49,423 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 22:50:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:50:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:50:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:50:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:50:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:50:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:50:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:50:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:50:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:50:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:50:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:50:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:50:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:50:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:50:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:50:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:50:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:50:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:50:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:50:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:50:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:50:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:50:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:50:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:50:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:50:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:50:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:50:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:50:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:50:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:50:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:50:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:50:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:50:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:50:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:50:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:50:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:50:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:50:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:50:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:50:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:50:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:50:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:50:49,662 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:50:49,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:50:49,893 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:50:49,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:50:49,904 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-03-31 22:50:49,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:50:49 BoogieIcfgContainer [2023-03-31 22:50:49,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:50:49,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:50:49,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:50:49,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:50:49,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:50:48" (1/3) ... [2023-03-31 22:50:49,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bc6e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:50:49, skipping insertion in model container [2023-03-31 22:50:49,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:50:49" (2/3) ... [2023-03-31 22:50:49,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bc6e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:50:49, skipping insertion in model container [2023-03-31 22:50:49,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:50:49" (3/3) ... [2023-03-31 22:50:49,911 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2023-03-31 22:50:49,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:50:49,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-03-31 22:50:49,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:50:49,959 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;@2efdf33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:50:49,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-03-31 22:50:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 42 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:50:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-03-31 22:50:49,966 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:49,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:49,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 22:50:49,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1346572805, now seen corresponding path program 1 times [2023-03-31 22:50:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129630039] [2023-03-31 22:50:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:50,212 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 22:50:50,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129630039] [2023-03-31 22:50:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129630039] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:50,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:50:50,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580462311] [2023-03-31 22:50:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:50,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:50:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:50:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:50:50,246 INFO L87 Difference]: Start difference. First operand has 47 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 42 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:50,272 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2023-03-31 22:50:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:50:50,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-03-31 22:50:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:50,278 INFO L225 Difference]: With dead ends: 89 [2023-03-31 22:50:50,278 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 22:50:50,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:50:50,282 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:50,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:50:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 22:50:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-03-31 22:50:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-03-31 22:50:50,365 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 9 [2023-03-31 22:50:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:50,365 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-03-31 22:50:50,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-03-31 22:50:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-03-31 22:50:50,366 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:50,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:50,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:50:50,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 22:50:50,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1345806184, now seen corresponding path program 1 times [2023-03-31 22:50:50,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:50,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001917952] [2023-03-31 22:50:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:50,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:50,869 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 22:50:50,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:50,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001917952] [2023-03-31 22:50:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001917952] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:50,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:50:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873936468] [2023-03-31 22:50:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:50,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:50:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:50:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:50:50,876 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:50,951 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-03-31 22:50:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:50:50,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-03-31 22:50:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:50,953 INFO L225 Difference]: With dead ends: 42 [2023-03-31 22:50:50,953 INFO L226 Difference]: Without dead ends: 40 [2023-03-31 22:50:50,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:50:50,957 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:50,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:50:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-03-31 22:50:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-03-31 22:50:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-03-31 22:50:50,968 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2023-03-31 22:50:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:50,968 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-03-31 22:50:50,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-03-31 22:50:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 22:50:50,969 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:50,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:50,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:50:50,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 22:50:50,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1229724763, now seen corresponding path program 1 times [2023-03-31 22:50:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505146267] [2023-03-31 22:50:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:51,084 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 22:50:51,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505146267] [2023-03-31 22:50:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505146267] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:51,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:51,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:50:51,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039246007] [2023-03-31 22:50:51,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:50:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:50:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:50:51,090 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:51,157 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-03-31 22:50:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:50:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 22:50:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:51,159 INFO L225 Difference]: With dead ends: 66 [2023-03-31 22:50:51,159 INFO L226 Difference]: Without dead ends: 64 [2023-03-31 22:50:51,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:50:51,160 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:51,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:50:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-03-31 22:50:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2023-03-31 22:50:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-03-31 22:50:51,165 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2023-03-31 22:50:51,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:51,165 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-03-31 22:50:51,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:51,165 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-03-31 22:50:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:50:51,166 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:51,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:51,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:50:51,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 22:50:51,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash -638342380, now seen corresponding path program 1 times [2023-03-31 22:50:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:51,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691086395] [2023-03-31 22:50:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:51,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:51,269 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 22:50:51,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:51,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691086395] [2023-03-31 22:50:51,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691086395] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:51,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:50:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254485278] [2023-03-31 22:50:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:50:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:50:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:50:51,271 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:51,349 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-03-31 22:50:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 22:50:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 22:50:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:51,352 INFO L225 Difference]: With dead ends: 38 [2023-03-31 22:50:51,352 INFO L226 Difference]: Without dead ends: 36 [2023-03-31 22:50:51,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:50:51,357 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:51,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 101 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-03-31 22:50:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-03-31 22:50:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-03-31 22:50:51,369 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 15 [2023-03-31 22:50:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:51,369 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-03-31 22:50:51,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-03-31 22:50:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:50:51,370 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:51,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 22:50:51,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 22:50:51,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash -638304644, now seen corresponding path program 1 times [2023-03-31 22:50:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:51,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125825710] [2023-03-31 22:50:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:50:52,252 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 22:50:52,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:50:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125825710] [2023-03-31 22:50:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125825710] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:50:52,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:50:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 22:50:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739648301] [2023-03-31 22:50:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:50:52,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 22:50:52,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:50:52,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 22:50:52,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 22:50:52,253 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:50:52,426 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-03-31 22:50:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 22:50:52,427 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 22:50:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:50:52,428 INFO L225 Difference]: With dead ends: 53 [2023-03-31 22:50:52,428 INFO L226 Difference]: Without dead ends: 51 [2023-03-31 22:50:52,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-03-31 22:50:52,430 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:50:52,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 107 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:50:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-03-31 22:50:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2023-03-31 22:50:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-03-31 22:50:52,439 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 15 [2023-03-31 22:50:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:50:52,439 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-03-31 22:50:52,440 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:50:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-03-31 22:50:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 22:50:52,440 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:50:52,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:50:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 22:50:52,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 22:50:52,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:50:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash 447333244, now seen corresponding path program 1 times [2023-03-31 22:50:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:50:52,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583588092] [2023-03-31 22:50:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:50:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:50:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:50:52,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:50:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:50:52,538 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:50:52,538 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:50:52,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-03-31 22:50:52,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-03-31 22:50:52,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-03-31 22:50:52,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-03-31 22:50:52,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-03-31 22:50:52,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-03-31 22:50:52,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 22:50:52,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-03-31 22:50:52,547 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:50:52,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:50:52 BoogieIcfgContainer [2023-03-31 22:50:52,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:50:52,565 INFO L158 Benchmark]: Toolchain (without parser) took 3566.97ms. Allocated memory was 180.4MB in the beginning and 267.4MB in the end (delta: 87.0MB). Free memory was 146.5MB in the beginning and 104.4MB in the end (delta: 42.1MB). Peak memory consumption was 130.5MB. Max. memory is 8.0GB. [2023-03-31 22:50:52,565 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:50:52,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.15ms. Allocated memory is still 180.4MB. Free memory was 146.5MB in the beginning and 128.5MB in the end (delta: 18.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 22:50:52,566 INFO L158 Benchmark]: Boogie Preprocessor took 46.84ms. Allocated memory is still 180.4MB. Free memory was 128.5MB in the beginning and 125.5MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 22:50:52,566 INFO L158 Benchmark]: RCFGBuilder took 518.50ms. Allocated memory is still 180.4MB. Free memory was 125.5MB in the beginning and 100.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-03-31 22:50:52,566 INFO L158 Benchmark]: TraceAbstraction took 2657.88ms. Allocated memory was 180.4MB in the beginning and 267.4MB in the end (delta: 87.0MB). Free memory was 99.7MB in the beginning and 104.4MB in the end (delta: -4.7MB). Peak memory consumption was 83.3MB. Max. memory is 8.0GB. [2023-03-31 22:50:52,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 340.15ms. Allocated memory is still 180.4MB. Free memory was 146.5MB in the beginning and 128.5MB in the end (delta: 18.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.84ms. Allocated memory is still 180.4MB. Free memory was 128.5MB in the beginning and 125.5MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 518.50ms. Allocated memory is still 180.4MB. Free memory was 125.5MB in the beginning and 100.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2657.88ms. Allocated memory was 180.4MB in the beginning and 267.4MB in the end (delta: 87.0MB). Free memory was 99.7MB in the beginning and 104.4MB in the end (delta: -4.7MB). Peak memory consumption was 83.3MB. 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: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head VAL [head={-1:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, x->data=1, x={-1:0}] [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data VAL [head={-1:0}, x->data=1, x={-1:0}] [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data VAL [head={-1:0}, x->data=2, x={-2:0}] [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() VAL [head={-1:0}, x={-2:0}] - UnprovableResult [Line: 1019]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 223 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 168 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 22:50:52,583 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...