/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 EqDomain -i ../sv-benchmarks/c/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:00:59,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:00:59,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:00:59,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:00:59,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:00:59,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:00:59,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:00:59,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:00:59,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:00:59,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:00:59,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:00:59,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:00:59,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:00:59,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:00:59,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:00:59,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:00:59,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:00:59,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:00:59,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:00:59,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:00:59,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:00:59,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:00:59,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:00:59,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:00:59,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:00:59,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:00:59,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:00:59,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:00:59,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:00:59,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:00:59,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:00:59,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:00:59,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:00:59,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:00:59,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:00:59,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:00:59,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:00:59,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:00:59,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:00:59,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:00:59,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:00:59,281 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 [2023-04-01 11:00:59,308 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:00:59,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:00:59,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:00:59,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:00:59,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:00:59,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:00:59,309 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:00:59,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:00:59,309 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:00:59,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:00:59,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:00:59,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:00:59,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:00:59,311 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:00:59,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:00:59,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:00:59,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:00:59,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:00:59,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:00:59,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:00:59,312 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:00:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:00:59,312 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:00:59,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:00:59,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:00:59,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:00:59,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:00:59,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:00:59,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:00:59,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:00:59,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:00:59,316 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:00:59,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:00:59,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:00:59,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:00:59,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:00:59,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:00:59,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:00:59,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:00:59,540 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:00:59,540 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:00:59,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/array-1.c [2023-04-01 11:01:00,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:01:00,851 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:01:00,852 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/array-1.c [2023-04-01 11:01:00,857 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de197c5/11e7fad7c5ca4508b8ccca1da56d890d/FLAGd222cf7be [2023-04-01 11:01:00,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de197c5/11e7fad7c5ca4508b8ccca1da56d890d [2023-04-01 11:01:00,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:01:00,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:01:00,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:01:00,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:01:00,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:01:00,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:01:00" (1/1) ... [2023-04-01 11:01:00,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b6ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:00, skipping insertion in model container [2023-04-01 11:01:00,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:01:00" (1/1) ... [2023-04-01 11:01:00,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:01:00,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:01:01,014 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/array-1.c[319,332] [2023-04-01 11:01:01,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:01:01,032 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:01:01,040 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/array-1.c[319,332] [2023-04-01 11:01:01,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:01:01,056 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:01:01,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01 WrapperNode [2023-04-01 11:01:01,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:01:01,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:01:01,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:01:01,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:01:01,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:01:01,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:01:01,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:01:01,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:01:01,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (1/1) ... [2023-04-01 11:01:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:01:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:01:01,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 11:01:01,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 11:01:01,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:01:01,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:01:01,144 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:01:01,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 11:01:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:01:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:01:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:01:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:01:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:01:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:01:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:01:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:01:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:01:01,206 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:01:01,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:01:01,304 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:01:01,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:01:01,341 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 11:01:01,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:01:01 BoogieIcfgContainer [2023-04-01 11:01:01,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:01:01,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:01:01,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:01:01,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:01:01,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:01:00" (1/3) ... [2023-04-01 11:01:01,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a8b370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:01:01, skipping insertion in model container [2023-04-01 11:01:01,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:01:01" (2/3) ... [2023-04-01 11:01:01,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a8b370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:01:01, skipping insertion in model container [2023-04-01 11:01:01,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:01:01" (3/3) ... [2023-04-01 11:01:01,350 INFO L112 eAbstractionObserver]: Analyzing ICFG array-1.c [2023-04-01 11:01:01,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:01:01,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:01:01,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:01:01,408 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;@6b3acc54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:01:01,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:01:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:01:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-01 11:01:01,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:01:01,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:01:01,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:01:01,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:01:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 737530195, now seen corresponding path program 1 times [2023-04-01 11:01:01,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:01:01,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743515898] [2023-04-01 11:01:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:01:01,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:01:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:01:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:01:01,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:01:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743515898] [2023-04-01 11:01:01,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743515898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:01:01,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:01:01,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 11:01:01,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669476162] [2023-04-01 11:01:01,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:01:01,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 11:01:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:01:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 11:01:01,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:01:01,899 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:01:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:01:01,925 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-04-01 11:01:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 11:01:01,928 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 [2023-04-01 11:01:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:01:01,933 INFO L225 Difference]: With dead ends: 29 [2023-04-01 11:01:01,933 INFO L226 Difference]: Without dead ends: 12 [2023-04-01 11:01:01,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:01:01,938 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:01:01,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:01:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-04-01 11:01:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-04-01 11:01:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:01:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-04-01 11:01:01,982 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2023-04-01 11:01:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:01:01,983 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-04-01 11:01:01,983 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) [2023-04-01 11:01:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-04-01 11:01:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 11:01:01,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:01:01,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:01:01,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:01:01,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:01:01,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:01:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1343671827, now seen corresponding path program 1 times [2023-04-01 11:01:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:01:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222137159] [2023-04-01 11:01:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:01:01,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:01:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:01:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:01:02,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:01:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222137159] [2023-04-01 11:01:02,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222137159] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:01:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044162942] [2023-04-01 11:01:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:01:02,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:01:02,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:01:02,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:01:02,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:01:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:01:02,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 11:01:02,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:01:02,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-01 11:01:02,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-04-01 11:01:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:01:02,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:01:02,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2023-04-01 11:01:02,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:01:02,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 87 [2023-04-01 11:01:03,210 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-04-01 11:01:03,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 39 [2023-04-01 11:01:03,228 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-04-01 11:01:03,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2023-04-01 11:01:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:01:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044162942] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:01:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1605753532] [2023-04-01 11:01:03,330 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-04-01 11:01:03,336 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:01:03,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:01:03,345 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:01:03,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:01:03,492 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-04-01 11:01:03,945 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 78 for LOIs [2023-04-01 11:01:04,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:01:04,053 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:01:04,806 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '157#(and (exists ((|v_main_~#array~0.base_BEFORE_CALL_1| Int) (|v_old(#length)_BEFORE_CALL_1| (Array Int Int)) (|v_old(#memory_int)_BEFORE_CALL_1| (Array Int (Array Int Int))) (|v_old(#valid)_BEFORE_CALL_1| (Array Int Int))) (and (not (= |v_main_~#array~0.base_BEFORE_CALL_1| 0)) (= (select |v_old(#valid)_BEFORE_CALL_1| 3) 1) (not (= |v_old(#valid)_BEFORE_CALL_1| |v_old(#length)_BEFORE_CALL_1|)) (= (select |v_old(#length)_BEFORE_CALL_1| 3) 12) (not (= |v_main_~#array~0.base_BEFORE_CALL_1| |#StackHeapBarrier|)) (not (= |v_main_~#array~0.base_BEFORE_CALL_1| 2)) (not (= (select |v_old(#memory_int)_BEFORE_CALL_1| 1) |v_old(#valid)_BEFORE_CALL_1|)) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_1| 1) 0)) (= (select |v_old(#valid)_BEFORE_CALL_1| 1) 1) (not (= |v_main_~#array~0.base_BEFORE_CALL_1| 1)) (= 2 (select |v_old(#length)_BEFORE_CALL_1| 1)) (= (select |v_old(#valid)_BEFORE_CALL_1| 2) 1) (not (= (select |v_old(#memory_int)_BEFORE_CALL_1| 1) |v_old(#length)_BEFORE_CALL_1|)) (not (= |v_main_~#array~0.base_BEFORE_CALL_1| 3)) (= (select |v_old(#length)_BEFORE_CALL_1| 2) 10) (= (select |v_old(#valid)_BEFORE_CALL_1| 0) 0) (= (select (select |v_old(#memory_int)_BEFORE_CALL_1| 1) 1) 0) (= (select |v_old(#valid)_BEFORE_CALL_1| |v_main_~#array~0.base_BEFORE_CALL_1|) 0))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:01:04,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:01:04,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:01:04,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-04-01 11:01:04,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052537420] [2023-04-01 11:01:04,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:01:04,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 11:01:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:01:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 11:01:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=368, Unknown=2, NotChecked=0, Total=420 [2023-04-01 11:01:04,810 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:01:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:01:04,917 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-04-01 11:01:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 11:01:04,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 11:01:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:01:04,917 INFO L225 Difference]: With dead ends: 13 [2023-04-01 11:01:04,917 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 11:01:04,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=525, Unknown=2, NotChecked=0, Total=600 [2023-04-01 11:01:04,919 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:01:04,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:01:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 11:01:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 11:01:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 11:01:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 11:01:04,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-04-01 11:01:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:01:04,921 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 11:01:04,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:01:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 11:01:04,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 11:01:04,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 11:01:04,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:01:05,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:01:05,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 11:01:05,167 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 11:01:05,168 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 11:01:05,168 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem9|) (= |main_~#array~0.offset| 0) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) 0)) (let ((.cse0 (mod main_~j~0 4294967296))) (or (<= (mod main_~SIZE~0 4294967296) .cse0) (= .cse0 0)))) [2023-04-01 11:01:05,168 INFO L899 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2023-04-01 11:01:05,169 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2023-04-01 11:01:05,169 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |main_~#array~0.offset| 0))) (or (and .cse0 (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) 0))) (and .cse0 (= main_~j~0 0) (= main_~SIZE~0 1)))) [2023-04-01 11:01:05,169 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 31) the Hoare annotation is: true [2023-04-01 11:01:05,171 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:01:05,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:01:05,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:01:05,171 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 11:01:05,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 11:01:05,172 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:01:05,172 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2023-04-01 11:01:05,172 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 10) the Hoare annotation is: true [2023-04-01 11:01:05,172 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-04-01 11:01:05,172 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-04-01 11:01:05,172 INFO L899 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2023-04-01 11:01:05,172 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-04-01 11:01:05,175 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 11:01:05,177 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 11:01:05,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 11:01:05 BoogieIcfgContainer [2023-04-01 11:01:05,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 11:01:05,195 INFO L158 Benchmark]: Toolchain (without parser) took 4317.58ms. Allocated memory was 276.8MB in the beginning and 332.4MB in the end (delta: 55.6MB). Free memory was 231.0MB in the beginning and 149.6MB in the end (delta: 81.3MB). Peak memory consumption was 138.4MB. Max. memory is 8.0GB. [2023-04-01 11:01:05,195 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:01:05,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.30ms. Allocated memory is still 276.8MB. Free memory was 231.0MB in the beginning and 220.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 11:01:05,195 INFO L158 Benchmark]: Boogie Preprocessor took 24.71ms. Allocated memory is still 276.8MB. Free memory was 220.8MB in the beginning and 219.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 11:01:05,195 INFO L158 Benchmark]: RCFGBuilder took 260.23ms. Allocated memory is still 276.8MB. Free memory was 219.4MB in the beginning and 205.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-01 11:01:05,196 INFO L158 Benchmark]: TraceAbstraction took 3848.92ms. Allocated memory was 276.8MB in the beginning and 332.4MB in the end (delta: 55.6MB). Free memory was 205.2MB in the beginning and 149.6MB in the end (delta: 55.6MB). Peak memory consumption was 112.1MB. Max. memory is 8.0GB. [2023-04-01 11:01:05,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.30ms. Allocated memory is still 276.8MB. Free memory was 231.0MB in the beginning and 220.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.71ms. Allocated memory is still 276.8MB. Free memory was 220.8MB in the beginning and 219.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 260.23ms. Allocated memory is still 276.8MB. Free memory was 219.4MB in the beginning and 205.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3848.92ms. Allocated memory was 276.8MB in the beginning and 332.4MB in the end (delta: 55.6MB). Free memory was 205.2MB in the beginning and 149.6MB in the end (delta: 55.6MB). Peak memory consumption was 112.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 54 HoareAnnotationTreeSize, 8 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 10 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (array == 0 && menor <= unknown-#memory_int-unknown[array][0]) || ((array == 0 && j == 0) && SIZE == 1) RESULT: Ultimate proved your program to be correct! [2023-04-01 11:01:05,221 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...