/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:15:24,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:15:24,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:15:24,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:15:24,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:15:24,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:15:24,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:15:24,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:15:24,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:15:24,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:15:24,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:15:24,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:15:24,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:15:24,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:15:24,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:15:24,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:15:24,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:15:24,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:15:24,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:15:24,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:15:24,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:15:24,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:15:24,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:15:24,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:15:24,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 12:15:24,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 12:15:24,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 12:15:24,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 12:15:24,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 12:15:24,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 12:15:24,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:15:24,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:15:24,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:15:24,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:15:24,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:15:24,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:15:24,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:15:24,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:15:24,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:15:24,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:15:24,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:15:24,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:15:24,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:15:24,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:15:24,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:15:24,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:15:24,565 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:15:24,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:15:24,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:15:24,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:15:24,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:15:24,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:15:24,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:15:24,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:15:24,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:15:24,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:15:24,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:15:24,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:15:24,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:15:24,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:15:24,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:15:24,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:15:24,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:15:24,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:15:24,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:15:24,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:15:24,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:15:24,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:15:24,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:15:24,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:15:24,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:15:24,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:15:24,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:15:24,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:15:24,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:15:24,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:15:24,923 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:15:24,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-07-17 12:15:25,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a3ffa31/a4ca299151664c8a8bbdc85aa3f8e9b6/FLAG300c5c9f7 [2020-07-17 12:15:25,596 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:15:25,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina2f.c [2020-07-17 12:15:25,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a3ffa31/a4ca299151664c8a8bbdc85aa3f8e9b6/FLAG300c5c9f7 [2020-07-17 12:15:25,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a3ffa31/a4ca299151664c8a8bbdc85aa3f8e9b6 [2020-07-17 12:15:25,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:15:25,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:15:25,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:25,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:15:25,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:15:25,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:25" (1/1) ... [2020-07-17 12:15:25,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cef6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:25, skipping insertion in model container [2020-07-17 12:15:25,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:25" (1/1) ... [2020-07-17 12:15:25,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:15:25,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:15:26,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:26,170 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:15:26,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:26,217 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:15:26,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26 WrapperNode [2020-07-17 12:15:26,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:26,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:15:26,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:15:26,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:15:26,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (1/1) ... [2020-07-17 12:15:26,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:15:26,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:15:26,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:15:26,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:15:26,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (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 [2020-07-17 12:15:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:15:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:15:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:15:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:15:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:15:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:15:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:15:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:15:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:15:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:15:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:15:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:15:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:15:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:15:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:15:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:15:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:15:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:15:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:15:26,787 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:15:26,788 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 12:15:26,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:26 BoogieIcfgContainer [2020-07-17 12:15:26,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:15:26,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:15:26,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:15:26,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:15:26,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:15:25" (1/3) ... [2020-07-17 12:15:26,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d77f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:26, skipping insertion in model container [2020-07-17 12:15:26,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:26" (2/3) ... [2020-07-17 12:15:26,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d77f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:26, skipping insertion in model container [2020-07-17 12:15:26,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:26" (3/3) ... [2020-07-17 12:15:26,804 INFO L109 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-07-17 12:15:26,820 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:15:26,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:15:26,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:15:26,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:15:26,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:15:26,879 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:15:26,879 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:15:26,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:15:26,880 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:15:26,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:15:26,880 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:15:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-17 12:15:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 12:15:26,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:26,911 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] [2020-07-17 12:15:26,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-07-17 12:15:26,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:26,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877471860] [2020-07-17 12:15:26,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:27,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877471860] [2020-07-17 12:15:27,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:27,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:15:27,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256473623] [2020-07-17 12:15:27,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:15:27,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:27,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:15:27,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:15:27,175 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-17 12:15:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:27,342 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-17 12:15:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:15:27,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-17 12:15:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:27,355 INFO L225 Difference]: With dead ends: 64 [2020-07-17 12:15:27,356 INFO L226 Difference]: Without dead ends: 32 [2020-07-17 12:15:27,361 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 [2020-07-17 12:15:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-17 12:15:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-17 12:15:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 12:15:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-17 12:15:27,401 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-07-17 12:15:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:27,402 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-17 12:15:27,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:15:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-17 12:15:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 12:15:27,403 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:27,403 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] [2020-07-17 12:15:27,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:15:27,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-07-17 12:15:27,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:27,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012358770] [2020-07-17 12:15:27,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:27,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012358770] [2020-07-17 12:15:27,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:27,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:15:27,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789042240] [2020-07-17 12:15:27,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:15:27,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:27,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:15:27,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:15:27,544 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-07-17 12:15:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:27,716 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-07-17 12:15:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:15:27,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-17 12:15:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:27,720 INFO L225 Difference]: With dead ends: 59 [2020-07-17 12:15:27,721 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 12:15:27,722 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 [2020-07-17 12:15:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 12:15:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-07-17 12:15:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-17 12:15:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-07-17 12:15:27,739 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-07-17 12:15:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:27,740 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-07-17 12:15:27,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:15:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-07-17 12:15:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 12:15:27,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:27,741 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] [2020-07-17 12:15:27,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:15:27,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:27,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-07-17 12:15:27,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:27,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487830313] [2020-07-17 12:15:27,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:27,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:15:27,901 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:15:27,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:15:27,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:15:27 BoogieIcfgContainer [2020-07-17 12:15:27,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:15:27,950 INFO L168 Benchmark]: Toolchain (without parser) took 2031.33 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 98.7 MB in the beginning and 96.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:27,952 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 140.5 MB. Free memory was 116.8 MB in the beginning and 116.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 12:15:27,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.52 ms. Allocated memory is still 140.5 MB. Free memory was 98.3 MB in the beginning and 87.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:27,954 INFO L168 Benchmark]: Boogie Preprocessor took 175.06 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 87.3 MB in the beginning and 177.1 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:27,954 INFO L168 Benchmark]: RCFGBuilder took 394.56 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 159.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:27,955 INFO L168 Benchmark]: TraceAbstraction took 1153.53 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 96.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:27,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 140.5 MB. Free memory was 116.8 MB in the beginning and 116.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.52 ms. Allocated memory is still 140.5 MB. Free memory was 98.3 MB in the beginning and 87.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.06 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 87.3 MB in the beginning and 177.1 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 394.56 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 159.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1153.53 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 96.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 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; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L30] COND TRUE i