/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:23:35,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:23:35,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:23:35,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:23:35,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:23:35,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:23:35,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:23:35,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:23:35,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:23:35,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:23:35,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:23:35,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:23:35,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:23:35,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:23:35,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:23:35,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:23:35,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:23:35,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:23:35,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:23:35,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:23:35,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:23:35,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:23:36,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:23:36,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:23:36,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 16:23:36,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:23:36,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:23:36,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:23:36,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:23:36,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:23:36,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:23:36,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:23:36,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:23:36,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:23:36,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:23:36,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:23:36,032 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 [2020-08-18 16:23:36,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:23:36,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:23:36,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:23:36,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:23:36,078 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:23:36,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:23:36,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:23:36,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:23:36,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:23:36,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:23:36,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:23:36,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:23:36,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:23:36,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:23:36,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:23:36,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:23:36,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:23:36,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:23:36,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:23:36,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:23:36,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:23:36,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:23:36,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:23:36,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:23:36,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:23:36,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:23:36,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:23:36,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:23:36,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:23:36,085 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 [2020-08-18 16:23:36,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:23:36,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:23:36,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:23:36,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:23:36,463 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:23:36,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2020-08-18 16:23:36,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d361da1e9/16b9c4a3e1bd4370820e484992935a45/FLAG899d8417f [2020-08-18 16:23:37,015 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:23:37,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2liff.c [2020-08-18 16:23:37,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d361da1e9/16b9c4a3e1bd4370820e484992935a45/FLAG899d8417f [2020-08-18 16:23:37,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d361da1e9/16b9c4a3e1bd4370820e484992935a45 [2020-08-18 16:23:37,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:23:37,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:23:37,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:23:37,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:23:37,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:23:37,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ebed4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37, skipping insertion in model container [2020-08-18 16:23:37,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:23:37,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:23:37,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:23:37,625 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:23:37,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:23:37,660 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:23:37,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37 WrapperNode [2020-08-18 16:23:37,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:23:37,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:23:37,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:23:37,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:23:37,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (1/1) ... [2020-08-18 16:23:37,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:23:37,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:23:37,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:23:37,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:23:37,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (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 [2020-08-18 16:23:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:23:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:23:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:23:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 16:23:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:23:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:23:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:23:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:23:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 16:23:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:23:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:23:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:23:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:23:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:23:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:23:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:23:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:23:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:23:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:23:38,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:23:38,159 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 16:23:38,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:23:38 BoogieIcfgContainer [2020-08-18 16:23:38,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:23:38,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:23:38,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:23:38,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:23:38,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:23:37" (1/3) ... [2020-08-18 16:23:38,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49445c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:23:38, skipping insertion in model container [2020-08-18 16:23:38,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:37" (2/3) ... [2020-08-18 16:23:38,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49445c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:23:38, skipping insertion in model container [2020-08-18 16:23:38,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:23:38" (3/3) ... [2020-08-18 16:23:38,179 INFO L109 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-08-18 16:23:38,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:23:38,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:23:38,221 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:23:38,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:23:38,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:23:38,273 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:23:38,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:23:38,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:23:38,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:23:38,274 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:23:38,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:23:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-18 16:23:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 16:23:38,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:23:38,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:23:38,322 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:23:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:23:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-18 16:23:38,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:23:38,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086007014] [2020-08-18 16:23:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:23:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:23:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:23:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:23:38,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086007014] [2020-08-18 16:23:38,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:23:38,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:23:38,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958916080] [2020-08-18 16:23:38,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:23:38,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:23:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:23:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:23:38,588 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-18 16:23:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:23:38,724 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-18 16:23:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:23:38,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-18 16:23:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:23:38,744 INFO L225 Difference]: With dead ends: 60 [2020-08-18 16:23:38,744 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 16:23:38,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:23:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 16:23:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 16:23:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 16:23:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-18 16:23:38,809 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-18 16:23:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:23:38,810 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-18 16:23:38,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:23:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-18 16:23:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 16:23:38,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:23:38,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:23:38,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:23:38,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:23:38,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:23:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-18 16:23:38,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:23:38,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933165521] [2020-08-18 16:23:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:23:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:23:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:23:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:23:38,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933165521] [2020-08-18 16:23:38,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:23:38,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:23:38,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260509689] [2020-08-18 16:23:38,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:23:38,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:23:38,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:23:38,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:23:38,961 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-18 16:23:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:23:39,100 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-18 16:23:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:23:39,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-18 16:23:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:23:39,102 INFO L225 Difference]: With dead ends: 48 [2020-08-18 16:23:39,102 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 16:23:39,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:23:39,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 16:23:39,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-18 16:23:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 16:23:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-18 16:23:39,114 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-18 16:23:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:23:39,114 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-18 16:23:39,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:23:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-18 16:23:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 16:23:39,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:23:39,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:23:39,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:23:39,117 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:23:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:23:39,117 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-18 16:23:39,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:23:39,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540705023] [2020-08-18 16:23:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:23:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:23:39,179 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:23:39,179 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:23:39,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:23:39,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:23:39 BoogieIcfgContainer [2020-08-18 16:23:39,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:23:39,227 INFO L168 Benchmark]: Toolchain (without parser) took 1825.08 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 100.8 MB in the beginning and 103.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:39,229 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 16:23:39,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.46 ms. Allocated memory is still 138.4 MB. Free memory was 100.4 MB in the beginning and 89.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:39,232 INFO L168 Benchmark]: Boogie Preprocessor took 132.83 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 89.5 MB in the beginning and 177.0 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:39,233 INFO L168 Benchmark]: RCFGBuilder took 371.44 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 159.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:39,236 INFO L168 Benchmark]: TraceAbstraction took 1053.06 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 103.3 MB in the end (delta: 55.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:39,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.46 ms. Allocated memory is still 138.4 MB. Free memory was 100.4 MB in the beginning and 89.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.83 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 89.5 MB in the beginning and 177.0 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.44 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 159.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1053.06 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 103.3 MB in the end (delta: 55.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = N [L30] i=0 [L30] COND TRUE i