/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-crafted-1/nested3-2_abstracted.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:06:11,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:06:11,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:06:11,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:06:11,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:06:11,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:06:11,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:06:11,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:06:11,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:06:11,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:06:11,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:06:11,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:06:11,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:06:11,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:06:11,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:06:11,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:06:11,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:06:11,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:06:11,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:06:11,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:06:12,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:06:12,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:06:12,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:06:12,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:06:12,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 23:06:12,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:06:12,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:06:12,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:06:12,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:06:12,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:06:12,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:06:12,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:06:12,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:06:12,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:06:12,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:06:12,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:06:12,024 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 23:06:12,054 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:06:12,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:06:12,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:06:12,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:06:12,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:06:12,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:06:12,056 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:06:12,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:06:12,057 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:06:12,057 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:06:12,058 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:06:12,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:06:12,058 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:06:12,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:06:12,058 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:06:12,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:06:12,059 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:06:12,059 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:06:12,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:06:12,060 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:06:12,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:06:12,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:06:12,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:06:12,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:06:12,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:06:12,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:06:12,061 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:06:12,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:06:12,061 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:06:12,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:06:12,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:06:12,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:06:12,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:06:12,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:06:12,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:06:12,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:06:12,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:06:12,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:06:12,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:06:12,343 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:06:12,343 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:06:12,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested3-2_abstracted.c [2023-03-31 23:06:13,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:06:13,694 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:06:13,695 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested3-2_abstracted.c [2023-03-31 23:06:13,700 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c86da69/0e207262d1634e49ad00613fa1077227/FLAGe2b425e34 [2023-03-31 23:06:13,714 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c86da69/0e207262d1634e49ad00613fa1077227 [2023-03-31 23:06:13,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:06:13,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:06:13,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:06:13,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:06:13,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:06:13,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f983743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13, skipping insertion in model container [2023-03-31 23:06:13,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:06:13,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:06:13,869 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-crafted-1/nested3-2_abstracted.c[739,752] [2023-03-31 23:06:13,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:06:13,891 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:06:13,901 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-crafted-1/nested3-2_abstracted.c[739,752] [2023-03-31 23:06:13,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:06:13,917 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:06:13,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13 WrapperNode [2023-03-31 23:06:13,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:06:13,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:06:13,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:06:13,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:06:13,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:06:13,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:06:13,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:06:13,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:06:13,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (1/1) ... [2023-03-31 23:06:13,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:06:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:13,970 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 23:06:13,973 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 23:06:14,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:06:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:06:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:06:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:06:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:06:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:06:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:06:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulonglong [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:06:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:06:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:06:14,069 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:06:14,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:06:14,180 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:06:14,210 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:06:14,210 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 23:06:14,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:06:14 BoogieIcfgContainer [2023-03-31 23:06:14,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:06:14,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:06:14,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:06:14,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:06:14,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:06:13" (1/3) ... [2023-03-31 23:06:14,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbafad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:06:14, skipping insertion in model container [2023-03-31 23:06:14,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:13" (2/3) ... [2023-03-31 23:06:14,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbafad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:06:14, skipping insertion in model container [2023-03-31 23:06:14,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:06:14" (3/3) ... [2023-03-31 23:06:14,220 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-2_abstracted.c [2023-03-31 23:06:14,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:06:14,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:06:14,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:06:14,321 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;@4d4b80c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:06:14,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:06:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 23:06:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 23:06:14,331 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:14,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:14,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:14,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash -232363042, now seen corresponding path program 1 times [2023-03-31 23:06:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299136646] [2023-03-31 23:06:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:14,711 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 23:06:14,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299136646] [2023-03-31 23:06:14,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299136646] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:06:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:06:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:06:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389837330] [2023-03-31 23:06:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:06:14,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:06:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:06:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:06:14,760 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 23:06:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:14,832 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2023-03-31 23:06:14,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:06:14,835 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 23:06:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:14,841 INFO L225 Difference]: With dead ends: 45 [2023-03-31 23:06:14,841 INFO L226 Difference]: Without dead ends: 24 [2023-03-31 23:06:14,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:06:14,847 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:06:14,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:06:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-03-31 23:06:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2023-03-31 23:06:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:06:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-03-31 23:06:14,904 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2023-03-31 23:06:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:14,905 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-03-31 23:06:14,905 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 23:06:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-03-31 23:06:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:06:14,907 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:14,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:06:14,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:14,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash -264190870, now seen corresponding path program 1 times [2023-03-31 23:06:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:14,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935473851] [2023-03-31 23:06:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:14,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:15,038 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 23:06:15,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935473851] [2023-03-31 23:06:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935473851] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:06:15,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:06:15,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:06:15,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857465743] [2023-03-31 23:06:15,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:06:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:06:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:06:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:06:15,042 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 23:06:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:15,078 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-03-31 23:06:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:06:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 23:06:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:15,081 INFO L225 Difference]: With dead ends: 35 [2023-03-31 23:06:15,081 INFO L226 Difference]: Without dead ends: 22 [2023-03-31 23:06:15,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:06:15,088 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 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 23:06:15,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:06:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-03-31 23:06:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-03-31 23:06:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:06:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-03-31 23:06:15,093 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2023-03-31 23:06:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-03-31 23:06:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 23:06:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-03-31 23:06:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:06:15,094 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:15,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:15,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:06:15,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:15,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash -262403410, now seen corresponding path program 1 times [2023-03-31 23:06:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006082265] [2023-03-31 23:06:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:06:15,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:06:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:06:15,176 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:06:15,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:06:15,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:06:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:06:15,181 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 23:06:15,184 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:06:15,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:06:15 BoogieIcfgContainer [2023-03-31 23:06:15,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:06:15,205 INFO L158 Benchmark]: Toolchain (without parser) took 1486.83ms. Allocated memory was 174.1MB in the beginning and 253.8MB in the end (delta: 79.7MB). Free memory was 127.6MB in the beginning and 208.7MB in the end (delta: -81.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:06:15,205 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 174.1MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:06:15,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.08ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 117.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:06:15,206 INFO L158 Benchmark]: Boogie Preprocessor took 24.32ms. Allocated memory is still 174.1MB. Free memory was 117.1MB in the beginning and 115.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 23:06:15,208 INFO L158 Benchmark]: RCFGBuilder took 269.82ms. Allocated memory is still 174.1MB. Free memory was 115.4MB in the beginning and 102.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 23:06:15,209 INFO L158 Benchmark]: TraceAbstraction took 989.66ms. Allocated memory was 174.1MB in the beginning and 253.8MB in the end (delta: 79.7MB). Free memory was 102.0MB in the beginning and 208.7MB in the end (delta: -106.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:06:15,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 174.1MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.08ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 117.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.32ms. Allocated memory is still 174.1MB. Free memory was 117.1MB in the beginning and 115.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 269.82ms. Allocated memory is still 174.1MB. Free memory was 115.4MB in the beginning and 102.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 989.66ms. Allocated memory was 174.1MB in the beginning and 253.8MB in the end (delta: 79.7MB). Free memory was 102.0MB in the beginning and 208.7MB in the end (delta: -106.7MB). There was no memory consumed. 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] unsigned int x = 0; [L25] unsigned int y = 0; [L26] unsigned int z = 0; [L27] unsigned int w = 0; VAL [w=0, x=0, y=0, z=0] [L29] COND TRUE x < 0x0fffffff [L30] y = 0 VAL [w=0, x=0, y=0, z=0] [L32] COND TRUE y < 0x0fffffff [L33] z =0 [L35] COND TRUE z < (268435455) [L36] long long int z__VERIFIER_LA_tmp0; [L37] z__VERIFIER_LA_tmp0 = z [L38] long long int __VERIFIER_LA_iterations0; [L39] __VERIFIER_LA_iterations0 = (268435455 - z__VERIFIER_LA_tmp0) / 1L [L40] unsigned int z__VERIFIER_LA_old_tmp0; [L41] z__VERIFIER_LA_old_tmp0 = z [L42] z = (__VERIFIER_LA_iterations0 * 1L) + z__VERIFIER_LA_old_tmp0 VAL [__VERIFIER_LA_iterations0=268435455, w=0, x=0, y=0, z=268435455, z__VERIFIER_LA_old_tmp0=0, z__VERIFIER_LA_tmp0=0] [L45] CALL __VERIFIER_assert(!(z % 4)) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 34 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 23:06:15,232 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...