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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:46:03,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:46:03,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:46:03,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 12:46:03,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 12:46:03,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 12:46:03,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 12:46:03,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 12:46:03,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 12:46:03,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 12:46:03,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 12:46:03,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 12:46:03,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:46:03,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:46:03,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:46:03,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:46:03,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:46:03,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:46:03,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:46:03,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:46:03,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:46:03,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:46:03,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:46:03,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:46:03,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-05 12:46:03,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-05 12:46:03,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-05 12:46:03,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-05 12:46:03,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-05 12:46:03,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-05 12:46:03,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 12:46:03,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 12:46:03,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 12:46:03,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 12:46:03,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 12:46:03,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 12:46:03,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 12:46:03,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 12:46:03,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:46:03,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:46:03,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:46:03,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 12:46:03,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:46:03,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:46:03,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 12:46:03,820 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 12:46:03,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 12:46:03,821 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 12:46:03,821 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 12:46:03,821 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 12:46:03,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 12:46:03,822 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 12:46:03,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:46:03,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:46:03,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:46:03,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:46:03,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:46:03,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:46:03,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:46:03,826 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:46:03,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:46:03,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:46:03,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:46:03,827 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 12:46:03,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:46:03,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:46:03,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:46:03,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:46:03,828 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 12:46:03,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:46:03,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:46:03,829 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 12:46:03,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:46:03,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:46:03,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:46:03,901 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:46:03,901 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:46:03,902 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2019-09-05 12:46:03,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c07dd3e0/0bc8bdcf8e094acca8695e94e57b5f38/FLAGd031a7236 [2019-09-05 12:46:04,482 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:46:04,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2019-09-05 12:46:04,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c07dd3e0/0bc8bdcf8e094acca8695e94e57b5f38/FLAGd031a7236 [2019-09-05 12:46:04,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c07dd3e0/0bc8bdcf8e094acca8695e94e57b5f38 [2019-09-05 12:46:04,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:46:04,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:46:04,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:04,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:46:04,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:46:04,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:04" (1/1) ... [2019-09-05 12:46:04,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a40123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:04, skipping insertion in model container [2019-09-05 12:46:04,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:46:04" (1/1) ... [2019-09-05 12:46:04,831 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:46:04,847 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:46:05,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:05,064 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:46:05,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:46:05,213 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:46:05,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05 WrapperNode [2019-09-05 12:46:05,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:46:05,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:46:05,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:46:05,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:46:05,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (1/1) ... [2019-09-05 12:46:05,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:46:05,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:46:05,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:46:05,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:46:05,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (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 [2019-09-05 12:46:05,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:46:05,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:46:05,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:46:05,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:46:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:46:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 12:46:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 12:46:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:46:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:46:05,696 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:46:05,696 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-05 12:46:05,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:05 BoogieIcfgContainer [2019-09-05 12:46:05,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:46:05,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:46:05,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:46:05,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:46:05,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:46:04" (1/3) ... [2019-09-05 12:46:05,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a39a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:05, skipping insertion in model container [2019-09-05 12:46:05,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:46:05" (2/3) ... [2019-09-05 12:46:05,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a39a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:46:05, skipping insertion in model container [2019-09-05 12:46:05,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:46:05" (3/3) ... [2019-09-05 12:46:05,708 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-09-05 12:46:05,718 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:46:05,725 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:46:05,741 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:46:05,765 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:46:05,765 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 12:46:05,765 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:46:05,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:46:05,766 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:46:05,766 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:46:05,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:46:05,766 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:46:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-05 12:46:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:46:05,790 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:05,791 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:05,794 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-09-05 12:46:05,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:05,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:05,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:05,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:05,848 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:05,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:05,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:46:05,953 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:05,957 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:46:05,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:46:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:46:05,974 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-09-05 12:46:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:05,996 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-09-05 12:46:05,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:46:05,997 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-05 12:46:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:06,008 INFO L225 Difference]: With dead ends: 30 [2019-09-05 12:46:06,009 INFO L226 Difference]: Without dead ends: 25 [2019-09-05 12:46:06,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:46:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-05 12:46:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-05 12:46:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-05 12:46:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-05 12:46:06,057 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-09-05 12:46:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:06,058 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-05 12:46:06,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:46:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-05 12:46:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:46:06,059 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:06,060 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:46:06,060 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:06,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-09-05 12:46:06,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:06,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:06,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:06,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:06,063 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:46:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:46:06,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:46:06,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-05 12:46:06,294 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:46:06,296 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 12:46:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 12:46:06,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 12:46:06,297 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-09-05 12:46:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:46:06,491 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-09-05 12:46:06,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 12:46:06,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-05 12:46:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:46:06,495 INFO L225 Difference]: With dead ends: 41 [2019-09-05 12:46:06,496 INFO L226 Difference]: Without dead ends: 35 [2019-09-05 12:46:06,497 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:46:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-05 12:46:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-09-05 12:46:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-05 12:46:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-09-05 12:46:06,509 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2019-09-05 12:46:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:46:06,509 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-09-05 12:46:06,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 12:46:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-09-05 12:46:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-05 12:46:06,511 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:46:06,511 INFO L399 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] [2019-09-05 12:46:06,511 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:46:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:46:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-09-05 12:46:06,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:46:06,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:06,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:46:06,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:46:06,514 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:46:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 12:46:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-05 12:46:06,884 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-05 12:46:06,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:46:06 BoogieIcfgContainer [2019-09-05 12:46:06,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:46:06,959 INFO L168 Benchmark]: Toolchain (without parser) took 2145.93 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 86.8 MB in the beginning and 106.1 MB in the end (delta: -19.4 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:06,961 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:46:06,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.92 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 86.6 MB in the beginning and 176.0 MB in the end (delta: -89.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:06,966 INFO L168 Benchmark]: Boogie Preprocessor took 50.04 ms. Allocated memory is still 199.2 MB. Free memory was 176.0 MB in the beginning and 173.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:06,967 INFO L168 Benchmark]: RCFGBuilder took 433.36 ms. Allocated memory is still 199.2 MB. Free memory was 173.7 MB in the beginning and 156.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:06,968 INFO L168 Benchmark]: TraceAbstraction took 1255.62 ms. Allocated memory is still 199.2 MB. Free memory was 156.9 MB in the beginning and 106.1 MB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2019-09-05 12:46:06,978 INFO L335 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 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 399.92 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 86.6 MB in the beginning and 176.0 MB in the end (delta: -89.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.04 ms. Allocated memory is still 199.2 MB. Free memory was 176.0 MB in the beginning and 173.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.36 ms. Allocated memory is still 199.2 MB. Free memory was 173.7 MB in the beginning and 156.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1255.62 ms. Allocated memory is still 199.2 MB. Free memory was 156.9 MB in the beginning and 106.1 MB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={1:0}, B={-2:0}, C={-1:0}, i=0, M=1] [L18] COND TRUE i