/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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:23:42,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:23:42,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:23:42,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:23:42,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:23:42,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:23:42,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:23:42,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:23:42,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:23:42,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:23:42,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:23:42,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:23:42,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:23:42,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:23:42,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:23:42,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:23:42,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:23:42,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:23:43,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:23:43,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:23:43,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:23:43,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:23:43,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:23:43,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:23:43,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 16:23:43,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:23:43,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:23:43,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:23:43,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:23:43,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:23:43,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:23:43,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:23:43,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:23:43,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:23:43,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:23:43,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:23:43,030 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 16:23:43,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:23:43,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:23:43,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:23:43,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:23:43,078 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:23:43,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:23:43,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:23:43,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:23:43,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:23:43,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:23:43,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:23:43,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:23:43,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:23:43,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:23:43,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:23:43,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:23:43,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:23:43,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:23:43,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:23:43,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:23:43,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:23:43,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:23:43,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:23:43,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:23:43,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:23:43,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:23:43,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:23:43,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:23:43,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:23:43,084 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 16:23:43,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:23:43,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:23:43,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:23:43,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:23:43,398 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:23:43,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-18 16:23:43,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9abd8b558/69909fd4fd744b2e854a29ab56653bd5/FLAG6c9f0b5c2 [2020-08-18 16:23:43,874 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:23:43,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-18 16:23:43,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9abd8b558/69909fd4fd744b2e854a29ab56653bd5/FLAG6c9f0b5c2 [2020-08-18 16:23:44,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9abd8b558/69909fd4fd744b2e854a29ab56653bd5 [2020-08-18 16:23:44,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:23:44,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:23:44,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:23:44,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:23:44,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:23:44,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8c36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44, skipping insertion in model container [2020-08-18 16:23:44,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:23:44,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:23:44,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:23:44,584 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:23:44,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:23:44,754 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:23:44,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44 WrapperNode [2020-08-18 16:23:44,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:23:44,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:23:44,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:23:44,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:23:44,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (1/1) ... [2020-08-18 16:23:44,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:23:44,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:23:44,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:23:44,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:23:44,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (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 16:23:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:23:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:23:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:23:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 16:23:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:23:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:23:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:23:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:23:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 16:23:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:23:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:23:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:23:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:23:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:23:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:23:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:23:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:23:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:23:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:23:45,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:23:45,259 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 16:23:45,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:23:45 BoogieIcfgContainer [2020-08-18 16:23:45,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:23:45,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:23:45,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:23:45,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:23:45,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:23:44" (1/3) ... [2020-08-18 16:23:45,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6157ff70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:23:45, skipping insertion in model container [2020-08-18 16:23:45,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:23:44" (2/3) ... [2020-08-18 16:23:45,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6157ff70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:23:45, skipping insertion in model container [2020-08-18 16:23:45,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:23:45" (3/3) ... [2020-08-18 16:23:45,272 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-18 16:23:45,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:23:45,298 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:23:45,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:23:45,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:23:45,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:23:45,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:23:45,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:23:45,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:23:45,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:23:45,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:23:45,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:23:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-18 16:23:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:23:45,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:23:45,393 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] [2020-08-18 16:23:45,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:23:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:23:45,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-18 16:23:45,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:23:45,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165429784] [2020-08-18 16:23:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:23:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:45,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:23:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:23:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:45,624 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 16:23:45,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165429784] [2020-08-18 16:23:45,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:23:45,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:23:45,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688003256] [2020-08-18 16:23:45,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:23:45,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:23:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:23:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:23:45,649 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-18 16:23:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:23:45,775 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-18 16:23:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:23:45,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-18 16:23:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:23:45,787 INFO L225 Difference]: With dead ends: 76 [2020-08-18 16:23:45,787 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 16:23:45,791 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 16:23:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 16:23:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 16:23:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 16:23:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-18 16:23:45,836 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-18 16:23:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:23:45,837 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-18 16:23:45,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:23:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-18 16:23:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:23:45,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:23:45,839 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] [2020-08-18 16:23:45,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:23:45,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:23:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:23:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-18 16:23:45,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:23:45,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528235954] [2020-08-18 16:23:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:23:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:23:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:23:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:23:45,966 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 16:23:45,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528235954] [2020-08-18 16:23:45,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:23:45,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:23:45,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43481324] [2020-08-18 16:23:45,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:23:45,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:23:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:23:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:23:45,970 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-18 16:23:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:23:46,172 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-18 16:23:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:23:46,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-18 16:23:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:23:46,176 INFO L225 Difference]: With dead ends: 75 [2020-08-18 16:23:46,177 INFO L226 Difference]: Without dead ends: 52 [2020-08-18 16:23:46,178 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 16:23:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-18 16:23:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-18 16:23:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 16:23:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-18 16:23:46,195 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-18 16:23:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:23:46,195 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-18 16:23:46,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:23:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-18 16:23:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 16:23:46,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:23:46,197 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:23:46,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:23:46,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:23:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:23:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-18 16:23:46,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:23:46,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863823929] [2020-08-18 16:23:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:23:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:23:46,280 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:23:46,280 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:23:46,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:23:46,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:23:46 BoogieIcfgContainer [2020-08-18 16:23:46,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:23:46,308 INFO L168 Benchmark]: Toolchain (without parser) took 2014.34 ms. Allocated memory was 149.4 MB in the beginning and 233.8 MB in the end (delta: 84.4 MB). Free memory was 104.0 MB in the beginning and 201.5 MB in the end (delta: -97.5 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:46,309 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:23:46,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.27 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 184.8 MB in the end (delta: -81.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:46,311 INFO L168 Benchmark]: Boogie Preprocessor took 88.33 ms. Allocated memory is still 206.0 MB. Free memory was 184.8 MB in the beginning and 182.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:46,312 INFO L168 Benchmark]: RCFGBuilder took 417.33 ms. Allocated memory is still 206.0 MB. Free memory was 182.6 MB in the beginning and 162.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:46,313 INFO L168 Benchmark]: TraceAbstraction took 1039.60 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 162.2 MB in the beginning and 201.5 MB in the end (delta: -39.3 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:23:46,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.27 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 184.8 MB in the end (delta: -81.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.33 ms. Allocated memory is still 206.0 MB. Free memory was 184.8 MB in the beginning and 182.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.33 ms. Allocated memory is still 206.0 MB. Free memory was 182.6 MB in the beginning and 162.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1039.60 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 162.2 MB in the beginning and 201.5 MB in the end (delta: -39.3 MB). Peak memory consumption was 74.1 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] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i