/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:59:36,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:59:36,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:59:36,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:59:36,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:59:36,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:59:36,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:59:36,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:59:36,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:59:36,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:59:36,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:59:36,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:59:36,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:59:36,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:59:36,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:59:36,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:59:36,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:59:36,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:59:36,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:59:36,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:59:36,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:59:36,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:59:36,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:59:36,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:59:36,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:59:36,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:59:36,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:59:36,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:59:36,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:59:36,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:59:36,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:59:36,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:59:36,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:59:36,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:59:36,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:59:36,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:59:36,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:59:36,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:59:36,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:59:36,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:59:36,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:59:36,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:59:36,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:59:36,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:59:36,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:59:36,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:59:36,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:59:36,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:59:36,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:59:36,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:59:36,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:59:36,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:59:36,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:59:36,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:59:36,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:59:36,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:59:36,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:59:36,386 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:59:36,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:59:36,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:59:36,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:59:36,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:59:36,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:59:36,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:59:36,387 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:59:36,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:59:36,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:59:36,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:59:36,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:59:36,711 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:59:36,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-07-07 13:59:36,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88696077/dcdc86d25f3f4fac8467409ab8340872/FLAG36871f555 [2020-07-07 13:59:37,229 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:59:37,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-07-07 13:59:37,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88696077/dcdc86d25f3f4fac8467409ab8340872/FLAG36871f555 [2020-07-07 13:59:37,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88696077/dcdc86d25f3f4fac8467409ab8340872 [2020-07-07 13:59:37,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:59:37,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:59:37,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:37,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:59:37,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:59:37,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fb5132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37, skipping insertion in model container [2020-07-07 13:59:37,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:59:37,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:59:37,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:37,821 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:59:37,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:37,849 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:59:37,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37 WrapperNode [2020-07-07 13:59:37,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:37,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:59:37,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:59:37,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:59:37,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... [2020-07-07 13:59:37,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:59:37,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:59:37,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:59:37,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:59:37,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:59:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:59:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:59:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:59:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:59:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:59:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-07 13:59:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:59:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:59:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:59:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:59:38,175 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:59:38,175 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:59:38,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:38 BoogieIcfgContainer [2020-07-07 13:59:38,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:59:38,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:59:38,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:59:38,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:59:38,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:59:37" (1/3) ... [2020-07-07 13:59:38,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:38, skipping insertion in model container [2020-07-07 13:59:38,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:37" (2/3) ... [2020-07-07 13:59:38,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:38, skipping insertion in model container [2020-07-07 13:59:38,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:38" (3/3) ... [2020-07-07 13:59:38,187 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_2-2.c [2020-07-07 13:59:38,196 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:59:38,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:59:38,217 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:59:38,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:59:38,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:59:38,238 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:59:38,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:59:38,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:59:38,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:59:38,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:59:38,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:59:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-07 13:59:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 13:59:38,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:38,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:38,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1940560411, now seen corresponding path program 1 times [2020-07-07 13:59:38,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:38,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124420547] [2020-07-07 13:59:38,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:38,382 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:38,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124420547] [2020-07-07 13:59:38,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:38,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 13:59:38,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807318174] [2020-07-07 13:59:38,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 13:59:38,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:38,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 13:59:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:59:38,411 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-07 13:59:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:38,439 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-07 13:59:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 13:59:38,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-07 13:59:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:38,450 INFO L225 Difference]: With dead ends: 32 [2020-07-07 13:59:38,450 INFO L226 Difference]: Without dead ends: 15 [2020-07-07 13:59:38,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:59:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-07 13:59:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-07 13:59:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-07 13:59:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-07 13:59:38,496 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-07-07 13:59:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:38,497 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-07 13:59:38,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 13:59:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-07 13:59:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 13:59:38,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:38,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:38,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:59:38,499 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:38,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1947025058, now seen corresponding path program 1 times [2020-07-07 13:59:38,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:38,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783583818] [2020-07-07 13:59:38,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:59:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:59:38,560 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:38,560 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:59:38,560 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:59:38,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:59:38,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:59:38 BoogieIcfgContainer [2020-07-07 13:59:38,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:59:38,577 INFO L168 Benchmark]: Toolchain (without parser) took 950.90 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 105.6 MB in the beginning and 150.6 MB in the end (delta: -45.0 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:38,578 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:59:38,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.75 ms. Allocated memory is still 141.6 MB. Free memory was 105.4 MB in the beginning and 96.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:38,581 INFO L168 Benchmark]: Boogie Preprocessor took 107.51 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 96.1 MB in the beginning and 184.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:38,582 INFO L168 Benchmark]: RCFGBuilder took 221.05 ms. Allocated memory is still 204.5 MB. Free memory was 184.7 MB in the beginning and 173.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:38,583 INFO L168 Benchmark]: TraceAbstraction took 392.67 ms. Allocated memory is still 204.5 MB. Free memory was 172.7 MB in the beginning and 150.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:38,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.75 ms. Allocated memory is still 141.6 MB. Free memory was 105.4 MB in the beginning and 96.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.51 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 96.1 MB in the beginning and 184.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 221.05 ms. Allocated memory is still 204.5 MB. Free memory was 184.7 MB in the beginning and 173.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 392.67 ms. Allocated memory is still 204.5 MB. Free memory was 172.7 MB in the beginning and 150.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 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: [L12] unsigned int x = __VERIFIER_nondet_uint(); [L14] COND FALSE !(x < 0x0fffffff) [L18] CALL __VERIFIER_assert(x > 0x0fffffff) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...