/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:23:07,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:23:07,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:23:07,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:23:07,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:23:07,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:23:07,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:23:07,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:23:07,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:23:07,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:23:07,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:23:07,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:23:07,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:23:07,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:23:07,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:23:07,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:23:07,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:23:07,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:23:07,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:23:07,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:23:07,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:23:07,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:23:07,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:23:07,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:23:07,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:23:07,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:23:07,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:23:07,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:23:07,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:23:07,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:23:07,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:23:07,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:23:07,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:23:07,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:23:07,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:23:07,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:23:07,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:23:07,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:23:07,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:23:07,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:23:07,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:23:07,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:23:07,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:23:07,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:23:07,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:23:07,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:23:07,470 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:23:07,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:23:07,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:23:07,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:23:07,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:23:07,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:23:07,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:23:07,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:23:07,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:23:07,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:23:07,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:23:07,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:23:07,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:23:07,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:23:07,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:23:07,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:23:07,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:23:07,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:23:07,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:23:07,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:23:07,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:23:07,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:23:07,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:23:07,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:23:07,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:23:07,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:23:07,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:23:07,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:23:07,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:23:07,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:23:07,776 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:23:07,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test04.c [2020-08-21 21:23:07,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb672d520/d7cfb3bd714a40179a52ba3ea10dc5f0/FLAGb6db34dab [2020-08-21 21:23:08,319 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:23:08,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test04.c [2020-08-21 21:23:08,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb672d520/d7cfb3bd714a40179a52ba3ea10dc5f0/FLAGb6db34dab [2020-08-21 21:23:08,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb672d520/d7cfb3bd714a40179a52ba3ea10dc5f0 [2020-08-21 21:23:08,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:23:08,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:23:08,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:23:08,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:23:08,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:23:08,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:08,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08, skipping insertion in model container [2020-08-21 21:23:08,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:08,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:23:08,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:23:08,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:23:08,938 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:23:08,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:23:08,964 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:23:08,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08 WrapperNode [2020-08-21 21:23:08,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:23:08,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:23:08,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:23:08,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:23:08,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:08,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:09,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:09,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:09,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:09,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:09,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... [2020-08-21 21:23:09,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:23:09,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:23:09,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:23:09,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:23:09,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:23:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:23:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:23:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-21 21:23:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:23:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:23:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:23:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:23:09,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:23:09,343 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:23:09,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:23:09 BoogieIcfgContainer [2020-08-21 21:23:09,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:23:09,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:23:09,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:23:09,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:23:09,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:23:08" (1/3) ... [2020-08-21 21:23:09,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7631f549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:23:09, skipping insertion in model container [2020-08-21 21:23:09,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:23:08" (2/3) ... [2020-08-21 21:23:09,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7631f549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:23:09, skipping insertion in model container [2020-08-21 21:23:09,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:23:09" (3/3) ... [2020-08-21 21:23:09,356 INFO L109 eAbstractionObserver]: Analyzing ICFG test04.c [2020-08-21 21:23:09,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:23:09,375 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:23:09,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:23:09,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:23:09,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:23:09,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:23:09,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:23:09,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:23:09,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:23:09,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:23:09,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:23:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-21 21:23:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 21:23:09,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:23:09,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:23:09,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:23:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:23:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1498735640, now seen corresponding path program 1 times [2020-08-21 21:23:09,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:23:09,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042544490] [2020-08-21 21:23:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:23:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:23:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:23:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:23:09,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042544490] [2020-08-21 21:23:09,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:23:09,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:23:09,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189085537] [2020-08-21 21:23:09,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:23:09,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:23:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:23:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:23:09,885 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-08-21 21:23:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:23:10,063 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-08-21 21:23:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:23:10,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-21 21:23:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:23:10,074 INFO L225 Difference]: With dead ends: 22 [2020-08-21 21:23:10,075 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 21:23:10,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:23:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 21:23:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 21:23:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 21:23:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 21:23:10,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-08-21 21:23:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:23:10,114 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 21:23:10,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:23:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 21:23:10,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 21:23:10,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:23:10,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 21:23:10,185 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 21:23:10,185 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-21 21:23:10,186 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 21:23:10,186 INFO L268 CegarLoopResult]: For program point fEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 21:23:10,186 INFO L271 CegarLoopResult]: At program point fENTRY(lines 4 6) the Hoare annotation is: true [2020-08-21 21:23:10,186 INFO L268 CegarLoopResult]: For program point fFINAL(lines 4 6) no Hoare annotation was computed. [2020-08-21 21:23:10,187 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 21:23:10,187 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 21:23:10,187 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 21:23:10,187 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 21:23:10,188 INFO L264 CegarLoopResult]: At program point L17(lines 8 24) the Hoare annotation is: false [2020-08-21 21:23:10,188 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-08-21 21:23:10,188 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2020-08-21 21:23:10,188 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (= main_~p1~0.base |main_~#a~0.base|)) [2020-08-21 21:23:10,189 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 24) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-21 21:23:10,189 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-08-21 21:23:10,189 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 24) no Hoare annotation was computed. [2020-08-21 21:23:10,189 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 24) no Hoare annotation was computed. [2020-08-21 21:23:10,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:23:10 BoogieIcfgContainer [2020-08-21 21:23:10,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:23:10,205 INFO L168 Benchmark]: Toolchain (without parser) took 1517.68 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.7 MB in the beginning and 123.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2020-08-21 21:23:10,206 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:23:10,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.48 ms. Allocated memory is still 148.4 MB. Free memory was 104.5 MB in the beginning and 94.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:23:10,208 INFO L168 Benchmark]: Boogie Preprocessor took 120.25 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.8 MB in the beginning and 183.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:23:10,209 INFO L168 Benchmark]: RCFGBuilder took 261.64 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 169.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:23:10,210 INFO L168 Benchmark]: TraceAbstraction took 853.02 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 123.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-08-21 21:23:10,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.48 ms. Allocated memory is still 148.4 MB. Free memory was 104.5 MB in the beginning and 94.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.25 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.8 MB in the beginning and 183.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.64 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 169.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 853.02 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 123.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 2 SDslu, 35 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 28 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 correct! Received shutdown request...