/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:52:49,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:52:49,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:52:49,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:52:49,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:52:49,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:52:49,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:52:49,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:52:49,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:52:49,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:52:49,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:52:49,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:52:49,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:52:49,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:52:49,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:52:49,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:52:49,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:52:49,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:52:49,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:52:49,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:52:49,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:52:49,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:52:49,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:52:49,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:52:49,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:52:49,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:52:49,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:52:49,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:52:49,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:52:49,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 02:52:49,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:52:49,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:52:49,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:52:49,289 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 [2020-08-19 02:52:49,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:52:49,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:52:49,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:52:49,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:52:49,329 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:52:49,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:52:49,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:52:49,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:52:49,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:52:49,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:52:49,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:52:49,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:52:49,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:52:49,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:52:49,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:52:49,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:52:49,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:52:49,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:52:49,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:52:49,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:52:49,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:52:49,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:52:49,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:52:49,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:52:49,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:52:49,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:52:49,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:52:49,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:52:49,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:52:49,335 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:52:49,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:52:49,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:52:49,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:52:49,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:52:49,695 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:52:49,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-08-19 02:52:49,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83ee33696/b43be92e23d84a8f9765c463335e9e4c/FLAG5bc7c4959 [2020-08-19 02:52:50,244 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:52:50,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-08-19 02:52:50,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83ee33696/b43be92e23d84a8f9765c463335e9e4c/FLAG5bc7c4959 [2020-08-19 02:52:50,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83ee33696/b43be92e23d84a8f9765c463335e9e4c [2020-08-19 02:52:50,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:52:50,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:52:50,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:52:50,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:52:50,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:52:50,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:50,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3add5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50, skipping insertion in model container [2020-08-19 02:52:50,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:50,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:52:50,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:52:50,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:52:50,856 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:52:50,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:52:50,979 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:52:50,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50 WrapperNode [2020-08-19 02:52:50,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:52:50,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:52:50,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:52:50,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:52:50,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:50,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:51,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:51,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:51,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:51,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:51,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (1/1) ... [2020-08-19 02:52:51,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:52:51,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:52:51,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:52:51,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:52:51,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (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 [2020-08-19 02:52:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:52:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:52:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:52:51,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:52:51,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:52:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:52:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:52:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:52:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:52:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:52:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:52:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:52:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:52:51,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:52:51,374 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-19 02:52:51,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:52:51 BoogieIcfgContainer [2020-08-19 02:52:51,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:52:51,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:52:51,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:52:51,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:52:51,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:52:50" (1/3) ... [2020-08-19 02:52:51,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7974a58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:52:51, skipping insertion in model container [2020-08-19 02:52:51,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:52:50" (2/3) ... [2020-08-19 02:52:51,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7974a58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:52:51, skipping insertion in model container [2020-08-19 02:52:51,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:52:51" (3/3) ... [2020-08-19 02:52:51,391 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-08-19 02:52:51,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:52:51,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:52:51,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:52:51,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:52:51,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:52:51,468 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:52:51,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:52:51,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:52:51,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:52:51,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:52:51,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:52:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-19 02:52:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:52:51,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:52:51,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:52:51,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:52:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:52:51,512 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-19 02:52:51,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:52:51,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970499453] [2020-08-19 02:52:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:52:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:51,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:52:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:52:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:52:51,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970499453] [2020-08-19 02:52:51,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:52:51,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:52:51,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878381644] [2020-08-19 02:52:51,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:52:51,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:52:51,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:52:51,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:52:51,772 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-19 02:52:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:52:51,910 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-19 02:52:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:52:51,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 02:52:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:52:51,920 INFO L225 Difference]: With dead ends: 60 [2020-08-19 02:52:51,921 INFO L226 Difference]: Without dead ends: 28 [2020-08-19 02:52:51,925 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 [2020-08-19 02:52:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-19 02:52:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-19 02:52:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 02:52:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-19 02:52:51,966 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-19 02:52:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:52:51,967 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-19 02:52:51,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:52:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-19 02:52:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:52:51,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:52:51,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:52:51,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:52:51,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:52:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:52:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-19 02:52:51,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:52:51,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114186375] [2020-08-19 02:52:51,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:52:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:52,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:52:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:52:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:52:52,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114186375] [2020-08-19 02:52:52,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:52:52,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:52:52,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79513074] [2020-08-19 02:52:52,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:52:52,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:52:52,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:52:52,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:52:52,118 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-19 02:52:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:52:52,252 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-19 02:52:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:52:52,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-19 02:52:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:52:52,254 INFO L225 Difference]: With dead ends: 48 [2020-08-19 02:52:52,254 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 02:52:52,256 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 [2020-08-19 02:52:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 02:52:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-19 02:52:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-19 02:52:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-19 02:52:52,266 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-19 02:52:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:52:52,266 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-19 02:52:52,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:52:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-19 02:52:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 02:52:52,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:52:52,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:52:52,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:52:52,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:52:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:52:52,269 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-19 02:52:52,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:52:52,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937376113] [2020-08-19 02:52:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:52:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:52:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:52:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:52:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:52:52,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937376113] [2020-08-19 02:52:52,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:52:52,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:52:52,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332264997] [2020-08-19 02:52:52,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:52:52,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:52:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:52:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:52:52,606 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-08-19 02:52:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:52:52,810 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-19 02:52:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:52:52,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-08-19 02:52:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:52:52,812 INFO L225 Difference]: With dead ends: 50 [2020-08-19 02:52:52,813 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 02:52:52,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:52:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 02:52:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-19 02:52:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 02:52:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-19 02:52:52,821 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2020-08-19 02:52:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:52:52,822 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-19 02:52:52,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:52:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-19 02:52:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 02:52:52,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:52:52,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:52:52,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:52:52,824 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:52:52,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:52:52,825 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times [2020-08-19 02:52:52,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:52:52,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148445702] [2020-08-19 02:52:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:52:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:52:52,868 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:52:52,869 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:52:52,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:52:52,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:52:52 BoogieIcfgContainer [2020-08-19 02:52:52,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:52:52,910 INFO L168 Benchmark]: Toolchain (without parser) took 2310.57 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.5 MB in the beginning and 164.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:52:52,912 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:52:52,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.19 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 180.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:52:52,915 INFO L168 Benchmark]: Boogie Preprocessor took 48.53 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:52:52,917 INFO L168 Benchmark]: RCFGBuilder took 349.92 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 160.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:52:52,923 INFO L168 Benchmark]: TraceAbstraction took 1524.34 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 160.2 MB in the beginning and 164.2 MB in the end (delta: -4.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:52:52,934 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.19 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.3 MB in the beginning and 180.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.53 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.92 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 160.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1524.34 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 160.2 MB in the beginning and 164.2 MB in the end (delta: -4.0 MB). Peak memory consumption was 28.5 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i