/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:17:46,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:17:46,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:17:46,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:17:46,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:17:46,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:17:46,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:17:46,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:17:46,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:17:46,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:17:46,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:17:46,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:17:46,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:17:46,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:17:46,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:17:46,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:17:46,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:17:46,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:17:46,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:17:46,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:17:46,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:17:46,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:17:46,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:17:46,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:17:46,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:17:46,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:17:46,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:17:46,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:17:46,226 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 22:17:46,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:17:46,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:17:46,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:17:46,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:17:46,269 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:17:46,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:17:46,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:17:46,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:17:46,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:17:46,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:17:46,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:17:46,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:17:46,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:17:46,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:17:46,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:17:46,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:17:46,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:17:46,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:17:46,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:17:46,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:17:46,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:17:46,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:17:46,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:17:46,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:17:46,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:17:46,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:17:46,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:17:46,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:17:46,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:17:46,276 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:17:46,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:17:46,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:17:46,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:17:46,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:17:46,639 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:17:46,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-21 22:17:46,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf00c4752/96fcc99a87204398ab8ac5fa31f44af5/FLAGa9a9c49f2 [2020-08-21 22:17:47,172 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:17:47,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-21 22:17:47,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf00c4752/96fcc99a87204398ab8ac5fa31f44af5/FLAGa9a9c49f2 [2020-08-21 22:17:47,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf00c4752/96fcc99a87204398ab8ac5fa31f44af5 [2020-08-21 22:17:47,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:17:47,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:17:47,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:17:47,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:17:47,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:17:47,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47, skipping insertion in model container [2020-08-21 22:17:47,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:17:47,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:17:47,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:17:47,779 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:17:47,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:17:47,822 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:17:47,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47 WrapperNode [2020-08-21 22:17:47,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:17:47,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:17:47,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:17:47,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:17:47,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (1/1) ... [2020-08-21 22:17:47,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:17:47,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:17:47,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:17:47,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:17:47,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (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 22:17:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:17:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:17:48,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 22:17:48,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 22:17:48,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:17:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:17:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:17:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 22:17:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 22:17:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:17:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:17:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:17:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:17:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:17:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:17:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:17:48,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:17:48,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:17:48,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:17:48,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:17:48,360 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 22:17:48,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:17:48 BoogieIcfgContainer [2020-08-21 22:17:48,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:17:48,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:17:48,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:17:48,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:17:48,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:17:47" (1/3) ... [2020-08-21 22:17:48,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6424ed97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:17:48, skipping insertion in model container [2020-08-21 22:17:48,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:47" (2/3) ... [2020-08-21 22:17:48,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6424ed97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:17:48, skipping insertion in model container [2020-08-21 22:17:48,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:17:48" (3/3) ... [2020-08-21 22:17:48,374 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-21 22:17:48,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:17:48,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:17:48,413 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:17:48,441 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:17:48,441 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:17:48,441 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:17:48,442 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:17:48,442 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:17:48,442 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:17:48,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:17:48,443 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:17:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 22:17:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 22:17:48,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:48,474 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] [2020-08-21 22:17:48,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:48,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-21 22:17:48,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:48,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535045935] [2020-08-21 22:17:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:17:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:48,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:17:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:48,707 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 22:17:48,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535045935] [2020-08-21 22:17:48,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:17:48,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:17:48,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422539735] [2020-08-21 22:17:48,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:17:48,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:17:48,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:17:48,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:17:48,731 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 22:17:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:17:48,917 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 22:17:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:17:48,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-21 22:17:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:17:48,929 INFO L225 Difference]: With dead ends: 76 [2020-08-21 22:17:48,929 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 22:17:48,933 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 [2020-08-21 22:17:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 22:17:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 22:17:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 22:17:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-21 22:17:48,973 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-21 22:17:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:17:48,973 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-21 22:17:48,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:17:48,974 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-21 22:17:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 22:17:48,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:48,975 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] [2020-08-21 22:17:48,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:17:48,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:48,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-21 22:17:48,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:48,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168624674] [2020-08-21 22:17:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:17:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:17:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:49,140 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 22:17:49,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168624674] [2020-08-21 22:17:49,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:17:49,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:17:49,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886606519] [2020-08-21 22:17:49,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:17:49,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:17:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:17:49,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:17:49,150 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-21 22:17:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:17:49,347 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-21 22:17:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:17:49,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-21 22:17:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:17:49,351 INFO L225 Difference]: With dead ends: 75 [2020-08-21 22:17:49,352 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 22:17:49,353 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 [2020-08-21 22:17:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 22:17:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-21 22:17:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 22:17:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-21 22:17:49,370 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-21 22:17:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:17:49,371 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-21 22:17:49,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:17:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-21 22:17:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 22:17:49,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:49,373 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] [2020-08-21 22:17:49,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:17:49,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:49,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-21 22:17:49,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:49,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933260487] [2020-08-21 22:17:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:17:49,466 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:17:49,475 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:17:49,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:17:49,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:17:49 BoogieIcfgContainer [2020-08-21 22:17:49,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:17:49,507 INFO L168 Benchmark]: Toolchain (without parser) took 1954.96 ms. Allocated memory was 149.4 MB in the beginning and 233.3 MB in the end (delta: 83.9 MB). Free memory was 105.9 MB in the beginning and 201.3 MB in the end (delta: -95.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:49,508 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:17:49,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.44 ms. Allocated memory is still 149.4 MB. Free memory was 105.6 MB in the beginning and 94.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:49,510 INFO L168 Benchmark]: Boogie Preprocessor took 162.70 ms. Allocated memory was 149.4 MB in the beginning and 204.5 MB in the end (delta: 55.1 MB). Free memory was 94.7 MB in the beginning and 181.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:49,511 INFO L168 Benchmark]: RCFGBuilder took 378.87 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 161.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:49,512 INFO L168 Benchmark]: TraceAbstraction took 1137.29 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 160.9 MB in the beginning and 201.3 MB in the end (delta: -40.5 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:49,516 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.44 ms. Allocated memory is still 149.4 MB. Free memory was 105.6 MB in the beginning and 94.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.70 ms. Allocated memory was 149.4 MB in the beginning and 204.5 MB in the end (delta: 55.1 MB). Free memory was 94.7 MB in the beginning and 181.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.87 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 161.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1137.29 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 160.9 MB in the beginning and 201.3 MB in the end (delta: -40.5 MB). Peak memory consumption was 73.4 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