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/reducercommutativity/sum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:59:40,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:59:40,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:59:40,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:59:40,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:59:40,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:59:40,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:59:40,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:59:40,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:59:40,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:59:40,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:59:40,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:59:40,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:59:40,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:59:40,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:59:40,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:59:40,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:59:40,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:59:40,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:59:40,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:59:40,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:59:40,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:59:40,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:59:40,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:59:40,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:59:40,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:59:40,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:59:40,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:59:40,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:59:40,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:59:40,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:59:40,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:59:40,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:59:40,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:59:40,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:59:40,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:59:40,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:59:40,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:59:40,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:59:40,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:59:40,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:59:40,194 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 [2019-10-03 02:59:40,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:59:40,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:59:40,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:59:40,210 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:59:40,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:59:40,211 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:59:40,212 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:59:40,212 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:59:40,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:59:40,212 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:59:40,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:59:40,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:59:40,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:59:40,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:59:40,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:59:40,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:59:40,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:59:40,214 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:59:40,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:59:40,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:59:40,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:59:40,215 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:59:40,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:59:40,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:59:40,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:59:40,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:59:40,216 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:59:40,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:59:40,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:59:40,217 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:59:40,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:59:40,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:59:40,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:59:40,267 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:59:40,268 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:59:40,269 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum.i [2019-10-03 02:59:40,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c2b7ca/527c3a2af1774b1f8a399020ea8f63f9/FLAG74c5f7c91 [2019-10-03 02:59:40,796 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:59:40,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum.i [2019-10-03 02:59:40,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c2b7ca/527c3a2af1774b1f8a399020ea8f63f9/FLAG74c5f7c91 [2019-10-03 02:59:41,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c2b7ca/527c3a2af1774b1f8a399020ea8f63f9 [2019-10-03 02:59:41,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:59:41,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:59:41,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:41,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:59:41,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:59:41,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47243856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41, skipping insertion in model container [2019-10-03 02:59:41,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,175 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:59:41,198 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:59:41,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:41,422 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:59:41,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:41,467 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:59:41,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41 WrapperNode [2019-10-03 02:59:41,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:41,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:59:41,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:59:41,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:59:41,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (1/1) ... [2019-10-03 02:59:41,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:59:41,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:59:41,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:59:41,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:59:41,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (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 [2019-10-03 02:59:41,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:59:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:59:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-03 02:59:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:59:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:59:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:59:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-03 02:59:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:59:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:59:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:59:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:59:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:59:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:59:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:59:41,949 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:59:41,950 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-03 02:59:41,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:41 BoogieIcfgContainer [2019-10-03 02:59:41,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:59:41,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:59:41,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:59:41,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:59:41,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:59:41" (1/3) ... [2019-10-03 02:59:41,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304e94e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:41, skipping insertion in model container [2019-10-03 02:59:41,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:41" (2/3) ... [2019-10-03 02:59:41,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304e94e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:41, skipping insertion in model container [2019-10-03 02:59:41,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:41" (3/3) ... [2019-10-03 02:59:41,983 INFO L109 eAbstractionObserver]: Analyzing ICFG sum.i [2019-10-03 02:59:41,997 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:59:42,006 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:59:42,036 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:59:42,068 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:59:42,068 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:59:42,068 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:59:42,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:59:42,069 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:59:42,069 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:59:42,069 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:59:42,069 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:59:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-03 02:59:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-03 02:59:42,093 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:42,094 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:59:42,096 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:42,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1754504496, now seen corresponding path program 1 times [2019-10-03 02:59:42,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:42,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:42,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:42,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:42,154 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-03 02:59:42,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:59:42,262 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:59:42,263 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2019-10-03 02:59:42,265 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [17], [19], [20], [21], [24], [26], [28], [34], [42], [44], [47], [48], [59], [60], [61], [63], [64], [65], [66], [67], [68] [2019-10-03 02:59:42,300 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:59:42,300 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:59:42,373 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:59:42,375 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 28 variables. [2019-10-03 02:59:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:42,380 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:59:42,431 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-03 02:59:42,431 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:59:42,448 INFO L420 sIntCurrentIteration]: We unified 31 AI predicates to 31 [2019-10-03 02:59:42,448 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:59:42,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:59:42,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 3 [2019-10-03 02:59:42,450 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:42,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:59:42,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:59:42,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:59:42,470 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2019-10-03 02:59:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:42,494 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-10-03 02:59:42,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:59:42,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-10-03 02:59:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:42,503 INFO L225 Difference]: With dead ends: 12 [2019-10-03 02:59:42,504 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:59:42,506 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:59:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:59:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:59:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:59:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:59:42,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-03 02:59:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:42,535 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:59:42,536 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:59:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:59:42,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:59:42,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:59:42 BoogieIcfgContainer [2019-10-03 02:59:42,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:59:42,545 INFO L168 Benchmark]: Toolchain (without parser) took 1387.60 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 88.4 MB in the beginning and 129.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:42,546 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:59:42,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.68 ms. Allocated memory is still 132.1 MB. Free memory was 88.2 MB in the beginning and 77.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:42,548 INFO L168 Benchmark]: Boogie Preprocessor took 131.93 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 77.5 MB in the beginning and 175.1 MB in the end (delta: -97.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:42,549 INFO L168 Benchmark]: RCFGBuilder took 357.71 ms. Allocated memory is still 199.8 MB. Free memory was 175.1 MB in the beginning and 159.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:42,550 INFO L168 Benchmark]: TraceAbstraction took 578.88 ms. Allocated memory is still 199.8 MB. Free memory was 158.8 MB in the beginning and 129.6 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:42,554 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 106.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.68 ms. Allocated memory is still 132.1 MB. Free memory was 88.2 MB in the beginning and 77.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.93 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 77.5 MB in the beginning and 175.1 MB in the end (delta: -97.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.71 ms. Allocated memory is still 199.8 MB. Free memory was 175.1 MB in the beginning and 159.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 578.88 ms. Allocated memory is still 199.8 MB. Free memory was 158.8 MB in the beginning and 129.6 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 0 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9623655913978494 AbsIntWeakeningRatio, 1.3870967741935485 AbsIntAvgWeakeningVarsNumRemoved, 0.5161290322580645 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 961 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 0 PerfectInterpolantSequences, 9/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...