/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:57:54,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:57:54,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:57:54,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:57:54,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:57:54,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:57:54,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:57:54,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:57:54,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:57:54,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:57:54,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:57:54,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:57:54,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:57:54,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:57:54,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:57:54,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:57:54,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:57:54,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:57:54,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:57:54,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:57:54,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:57:54,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:57:54,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:57:54,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:57:54,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:57:54,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:57:54,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:57:54,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:57:54,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:57:54,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:57:54,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:57:54,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:57:54,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:57:54,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:57:54,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:57:54,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:57:54,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:57:54,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:57:54,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:57:54,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:57:54,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:57:54,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:57:54,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:57:54,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:57:54,978 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:57:54,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:57:54,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:57:54,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:57:54,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:57:54,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:57:54,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:57:54,979 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:57:55,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:57:55,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:57:55,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:57:55,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:57:55,296 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:57:55,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-07-07 13:57:55,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953c909c2/d4638901bf72424a8243946ebf075856/FLAG369bf629b [2020-07-07 13:57:55,900 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:57:55,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-07-07 13:57:55,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953c909c2/d4638901bf72424a8243946ebf075856/FLAG369bf629b [2020-07-07 13:57:56,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953c909c2/d4638901bf72424a8243946ebf075856 [2020-07-07 13:57:56,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:57:56,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:57:56,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:57:56,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:57:56,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:57:56,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f91bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56, skipping insertion in model container [2020-07-07 13:57:56,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:57:56,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:57:56,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:57:56,508 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:57:56,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:57:56,552 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:57:56,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56 WrapperNode [2020-07-07 13:57:56,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:57:56,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:57:56,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:57:56,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:57:56,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... [2020-07-07 13:57:56,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:57:56,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:57:56,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:57:56,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:57:56,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 13:57:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:57:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:57:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 13:57:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:57:56,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:57:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:57:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:57:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:57:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:57:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:57:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:57:57,144 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:57:57,144 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 13:57:57,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:57:57 BoogieIcfgContainer [2020-07-07 13:57:57,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:57:57,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:57:57,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:57:57,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:57:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:57:56" (1/3) ... [2020-07-07 13:57:57,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6877f657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:57:57, skipping insertion in model container [2020-07-07 13:57:57,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:56" (2/3) ... [2020-07-07 13:57:57,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6877f657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:57:57, skipping insertion in model container [2020-07-07 13:57:57,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:57:57" (3/3) ... [2020-07-07 13:57:57,158 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-07-07 13:57:57,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:57:57,176 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:57:57,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:57:57,207 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:57:57,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:57:57,207 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:57:57,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:57:57,208 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:57:57,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:57:57,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:57:57,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:57:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-07-07 13:57:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 13:57:57,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:57:57,237 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] [2020-07-07 13:57:57,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:57:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:57:57,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1638267314, now seen corresponding path program 1 times [2020-07-07 13:57:57,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:57:57,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933310030] [2020-07-07 13:57:57,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:57:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:57:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:57:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:57:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:57:57,524 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:57:57,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933310030] [2020-07-07 13:57:57,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:57:57,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:57:57,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129055779] [2020-07-07 13:57:57,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:57:57,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:57:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:57:57,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:57:57,563 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2020-07-07 13:57:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:57:57,782 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-07-07 13:57:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:57:57,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-07 13:57:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:57:57,794 INFO L225 Difference]: With dead ends: 141 [2020-07-07 13:57:57,795 INFO L226 Difference]: Without dead ends: 72 [2020-07-07 13:57:57,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:57:57,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-07 13:57:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-07 13:57:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-07 13:57:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-07-07 13:57:57,850 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 37 [2020-07-07 13:57:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:57:57,851 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-07-07 13:57:57,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:57:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-07-07 13:57:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 13:57:57,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:57:57,853 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] [2020-07-07 13:57:57,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:57:57,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:57:57,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:57:57,855 INFO L82 PathProgramCache]: Analyzing trace with hash -556138909, now seen corresponding path program 1 times [2020-07-07 13:57:57,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:57:57,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612061814] [2020-07-07 13:57:57,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:57:57,881 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:57:57,882 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:57:57,882 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:57:57,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:57:57,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:57:57 BoogieIcfgContainer [2020-07-07 13:57:57,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:57:57,905 INFO L168 Benchmark]: Toolchain (without parser) took 1636.46 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 111.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:57,906 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:57:57,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.92 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:57,908 INFO L168 Benchmark]: Boogie Preprocessor took 136.02 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.2 MB in the beginning and 179.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:57,909 INFO L168 Benchmark]: RCFGBuilder took 460.20 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 156.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:57,910 INFO L168 Benchmark]: TraceAbstraction took 751.48 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 111.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:57,914 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 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.92 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.02 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.2 MB in the beginning and 179.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.20 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 156.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 751.48 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 111.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 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] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i