/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -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 22:02:02,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:02:02,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:02:02,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:02:02,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:02:02,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:02:02,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:02:02,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:02:02,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:02:02,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:02:02,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:02:02,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:02:02,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:02:02,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:02:02,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:02:02,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:02:02,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:02:02,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:02:02,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:02:02,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:02:02,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:02:02,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:02:02,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:02:02,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:02:02,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:02:02,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:02:02,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:02:02,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:02:02,139 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 22:02:02,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:02:02,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:02:02,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:02:02,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:02:02,162 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:02:02,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:02:02,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:02:02,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:02:02,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:02:02,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:02:02,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:02:02,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:02:02,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:02:02,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:02:02,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:02:02,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:02:02,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:02:02,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:02:02,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:02:02,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:02:02,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:02:02,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:02:02,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:02:02,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:02:02,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:02:02,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:02:02,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:02:02,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:02:02,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:02:02,167 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=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:02:02,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:02:02,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:02:02,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:02:02,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:02:02,492 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:02:02,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-18 22:02:02,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/760a75171/7710ffe5d9db44ebb165353004b79ced/FLAGbee5992ff [2020-08-18 22:02:03,058 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:02:03,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-18 22:02:03,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/760a75171/7710ffe5d9db44ebb165353004b79ced/FLAGbee5992ff [2020-08-18 22:02:03,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/760a75171/7710ffe5d9db44ebb165353004b79ced [2020-08-18 22:02:03,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:02:03,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:02:03,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:02:03,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:02:03,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:02:03,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03, skipping insertion in model container [2020-08-18 22:02:03,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:02:03,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:02:03,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:02:03,684 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:02:03,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:02:03,822 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:02:03,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03 WrapperNode [2020-08-18 22:02:03,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:02:03,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:02:03,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:02:03,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:02:03,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (1/1) ... [2020-08-18 22:02:03,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:02:03,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:02:03,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:02:03,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:02:03,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (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 22:02:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:02:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:02:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:02:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:02:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:02:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:02:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:02:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:02:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:02:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:02:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:02:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:02:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:02:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:02:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:02:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:02:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:02:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:02:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:02:04,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:02:04,278 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 22:02:04,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:02:04 BoogieIcfgContainer [2020-08-18 22:02:04,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:02:04,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:02:04,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:02:04,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:02:04,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:02:03" (1/3) ... [2020-08-18 22:02:04,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d99835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:02:04, skipping insertion in model container [2020-08-18 22:02:04,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:03" (2/3) ... [2020-08-18 22:02:04,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d99835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:02:04, skipping insertion in model container [2020-08-18 22:02:04,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:02:04" (3/3) ... [2020-08-18 22:02:04,291 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-18 22:02:04,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:02:04,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:02:04,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:02:04,356 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:02:04,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:02:04,357 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:02:04,357 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:02:04,357 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:02:04,357 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:02:04,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:02:04,358 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:02:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-18 22:02:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 22:02:04,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:02:04,386 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 22:02:04,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:02:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:02:04,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-18 22:02:04,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:02:04,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413137529] [2020-08-18 22:02:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:02:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:02:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:02:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:04,618 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 22:02:04,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413137529] [2020-08-18 22:02:04,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:02:04,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:02:04,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178614873] [2020-08-18 22:02:04,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:02:04,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:02:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:02:04,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:02:04,646 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-18 22:02:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:02:04,785 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-18 22:02:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:02:04,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-18 22:02:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:02:04,797 INFO L225 Difference]: With dead ends: 76 [2020-08-18 22:02:04,797 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 22:02:04,801 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 22:02:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 22:02:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 22:02:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 22:02:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-18 22:02:04,842 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-18 22:02:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:02:04,843 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-18 22:02:04,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:02:04,843 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-18 22:02:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 22:02:04,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:02:04,845 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 22:02:04,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:02:04,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:02:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:02:04,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-18 22:02:04,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:02:04,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84539028] [2020-08-18 22:02:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:02:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:04,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:02:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:02:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:04,970 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 22:02:04,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84539028] [2020-08-18 22:02:04,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:02:04,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:02:04,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897009675] [2020-08-18 22:02:04,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:02:04,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:02:04,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:02:04,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:02:04,974 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-18 22:02:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:02:05,167 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-18 22:02:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:02:05,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-18 22:02:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:02:05,171 INFO L225 Difference]: With dead ends: 75 [2020-08-18 22:02:05,171 INFO L226 Difference]: Without dead ends: 52 [2020-08-18 22:02:05,173 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 22:02:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-18 22:02:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-18 22:02:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 22:02:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-18 22:02:05,190 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-18 22:02:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:02:05,190 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-18 22:02:05,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:02:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-18 22:02:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 22:02:05,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:02:05,192 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 22:02:05,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:02:05,193 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:02:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:02:05,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-18 22:02:05,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:02:05,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958997478] [2020-08-18 22:02:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:02:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:02:05,296 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:02:05,297 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:02:05,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:02:05,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:02:05 BoogieIcfgContainer [2020-08-18 22:02:05,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:02:05,346 INFO L168 Benchmark]: Toolchain (without parser) took 1901.13 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 104.2 MB in the beginning and 95.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:05,348 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 22:02:05,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.12 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 104.0 MB in the beginning and 183.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:05,361 INFO L168 Benchmark]: Boogie Preprocessor took 54.75 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:05,362 INFO L168 Benchmark]: RCFGBuilder took 402.25 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 161.4 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:05,364 INFO L168 Benchmark]: TraceAbstraction took 1055.92 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 95.3 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:05,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.12 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 104.0 MB in the beginning and 183.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.75 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.25 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 161.4 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1055.92 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 95.3 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 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