/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/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:54:29,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:54:29,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:54:29,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:54:29,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:54:29,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:54:29,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:54:29,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:54:29,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:54:29,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:54:29,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:54:29,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:54:29,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:54:29,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:54:29,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:54:29,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:54:29,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:54:29,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:54:29,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:54:29,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:54:29,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:54:29,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:54:29,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:54:29,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:54:29,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:54:29,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 14:54:29,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 14:54:29,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 14:54:29,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 14:54:29,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 14:54:29,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 14:54:29,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 14:54:29,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 14:54:29,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:54:29,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:54:29,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:54:29,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:54:29,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:54:29,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:54:29,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:54:29,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:54:29,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:54:29,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:54:29,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:54:29,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:54:29,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:54:29,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:54:29,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:54:29,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:54:29,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:54:29,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:54:29,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:54:29,350 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:54:29,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:54:29,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:54:29,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:29,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:54:29,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:54:29,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:54:29,351 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:54:29,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:54:29,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:54:29,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:54:29,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:54:29,665 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:54:29,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2020-07-17 14:54:29,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4fee22f/ff12d6fe0b3d44c8a7ad0920042782ea/FLAG34a6ce585 [2020-07-17 14:54:30,182 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:54:30,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2020-07-17 14:54:30,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4fee22f/ff12d6fe0b3d44c8a7ad0920042782ea/FLAG34a6ce585 [2020-07-17 14:54:30,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4fee22f/ff12d6fe0b3d44c8a7ad0920042782ea [2020-07-17 14:54:30,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:54:30,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:54:30,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:30,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:54:30,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:54:30,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30564470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30, skipping insertion in model container [2020-07-17 14:54:30,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:54:30,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:54:30,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:30,840 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:54:30,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:30,869 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:54:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30 WrapperNode [2020-07-17 14:54:30,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:30,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:54:30,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:54:30,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:54:30,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... [2020-07-17 14:54:30,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:54:30,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:54:30,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:54:30,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:54:30,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:54:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:54:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:54:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:54:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:54:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-17 14:54:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:54:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:54:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:54:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:54:31,261 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:54:31,261 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:54:31,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:31 BoogieIcfgContainer [2020-07-17 14:54:31,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:54:31,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:54:31,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:54:31,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:54:31,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:54:30" (1/3) ... [2020-07-17 14:54:31,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da25882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:31, skipping insertion in model container [2020-07-17 14:54:31,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:30" (2/3) ... [2020-07-17 14:54:31,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da25882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:31, skipping insertion in model container [2020-07-17 14:54:31,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:31" (3/3) ... [2020-07-17 14:54:31,293 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2020-07-17 14:54:31,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:54:31,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:54:31,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:54:31,391 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:54:31,391 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:54:31,391 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:54:31,391 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:54:31,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:54:31,392 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:54:31,392 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:54:31,392 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:54:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-17 14:54:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 14:54:31,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:31,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:31,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-07-17 14:54:31,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:31,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060187319] [2020-07-17 14:54:31,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:31,564 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:31,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060187319] [2020-07-17 14:54:31,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:31,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 14:54:31,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129156263] [2020-07-17 14:54:31,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 14:54:31,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 14:54:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:54:31,590 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-17 14:54:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:31,619 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-07-17 14:54:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 14:54:31,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-17 14:54:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:31,630 INFO L225 Difference]: With dead ends: 36 [2020-07-17 14:54:31,630 INFO L226 Difference]: Without dead ends: 19 [2020-07-17 14:54:31,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:54:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-17 14:54:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-17 14:54:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 14:54:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-17 14:54:31,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-07-17 14:54:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:31,679 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-17 14:54:31,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 14:54:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-17 14:54:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 14:54:31,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:31,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:31,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:54:31,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times [2020-07-17 14:54:31,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:31,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048420264] [2020-07-17 14:54:31,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 14:54:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 14:54:31,759 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:31,759 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 14:54:31,759 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 14:54:31,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:54:31,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:54:31 BoogieIcfgContainer [2020-07-17 14:54:31,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:54:31,777 INFO L168 Benchmark]: Toolchain (without parser) took 1158.35 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 104.1 MB in the beginning and 146.4 MB in the end (delta: -42.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:31,778 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 14:54:31,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.79 ms. Allocated memory is still 145.2 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:31,780 INFO L168 Benchmark]: Boogie Preprocessor took 112.25 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 181.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:31,781 INFO L168 Benchmark]: RCFGBuilder took 279.53 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 169.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:31,784 INFO L168 Benchmark]: TraceAbstraction took 492.01 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 146.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:31,789 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.79 ms. Allocated memory is still 145.2 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.25 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 181.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.53 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 169.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 492.01 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 146.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 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(); [L13] unsigned int y = x + 1; [L15] COND FALSE !(x < 1024) [L20] CALL __VERIFIER_assert(x == y) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 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: 25 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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...