/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-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:56:05,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:56:05,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:56:05,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:56:05,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:56:05,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:56:05,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:56:05,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:56:05,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:56:05,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:56:05,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:56:05,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:56:05,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:56:05,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:56:05,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:56:05,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:56:05,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:56:05,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:56:05,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:56:05,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:56:05,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:56:05,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:56:05,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:56:05,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:56:05,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:56:05,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:56:05,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:56:05,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:56:05,506 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 14:56:05,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:56:05,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:56:05,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:56:05,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:56:05,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:56:05,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:56:05,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:56:05,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:56:05,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:56:05,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:56:05,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:56:05,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:56:05,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:56:05,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:56:05,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:56:05,540 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:56:05,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:56:05,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:56:05,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:56:05,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:56:05,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:56:05,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:56:05,541 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:56:05,866 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:56:05,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:56:05,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:56:05,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:56:05,888 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:56:05,889 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-17 14:56:05,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9519a7b/3f64e67185394635bf34c96c0d9e87d8/FLAG0594bcba5 [2020-07-17 14:56:06,493 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:56:06,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-17 14:56:06,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9519a7b/3f64e67185394635bf34c96c0d9e87d8/FLAG0594bcba5 [2020-07-17 14:56:06,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9519a7b/3f64e67185394635bf34c96c0d9e87d8 [2020-07-17 14:56:06,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:56:06,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:56:06,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:06,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:56:06,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:56:06,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49eb3495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06, skipping insertion in model container [2020-07-17 14:56:06,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:56:06,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:56:07,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:07,249 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:56:07,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:07,305 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:56:07,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07 WrapperNode [2020-07-17 14:56:07,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:07,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:56:07,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:56:07,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:56:07,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (1/1) ... [2020-07-17 14:56:07,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:56:07,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:56:07,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:56:07,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:56:07,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (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 14:56:07,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:56:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:56:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:56:07,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:56:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:56:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:56:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:56:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:56:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:56:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:56:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:56:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:56:07,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:56:07,844 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 14:56:07,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:07 BoogieIcfgContainer [2020-07-17 14:56:07,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:56:07,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:56:07,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:56:07,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:56:07,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:56:06" (1/3) ... [2020-07-17 14:56:07,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b27c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:07, skipping insertion in model container [2020-07-17 14:56:07,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:07" (2/3) ... [2020-07-17 14:56:07,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b27c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:07, skipping insertion in model container [2020-07-17 14:56:07,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:07" (3/3) ... [2020-07-17 14:56:07,884 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-07-17 14:56:07,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:56:07,928 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:56:07,968 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:56:08,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:56:08,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:56:08,015 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:56:08,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:56:08,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:56:08,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:56:08,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:56:08,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:56:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-17 14:56:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 14:56:08,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:08,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:08,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash 405390035, now seen corresponding path program 1 times [2020-07-17 14:56:08,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:08,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655691786] [2020-07-17 14:56:08,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:08,597 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 14:56:08,603 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:08,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655691786] [2020-07-17 14:56:08,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:08,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 14:56:08,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051270662] [2020-07-17 14:56:08,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 14:56:08,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:08,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 14:56:08,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 14:56:08,642 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 9 states. [2020-07-17 14:56:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:09,343 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-07-17 14:56:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 14:56:09,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-17 14:56:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:09,360 INFO L225 Difference]: With dead ends: 65 [2020-07-17 14:56:09,360 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 14:56:09,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-07-17 14:56:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 14:56:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-17 14:56:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 14:56:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-17 14:56:09,425 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-17 14:56:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:09,426 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-17 14:56:09,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 14:56:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-17 14:56:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 14:56:09,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:09,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:09,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:56:09,429 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -86090943, now seen corresponding path program 1 times [2020-07-17 14:56:09,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:09,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655998254] [2020-07-17 14:56:09,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:09,718 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 14:56:09,719 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:09,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655998254] [2020-07-17 14:56:09,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:09,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 14:56:09,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145212397] [2020-07-17 14:56:09,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 14:56:09,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:09,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 14:56:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-17 14:56:09,724 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 11 states. [2020-07-17 14:56:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:10,111 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-17 14:56:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 14:56:10,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-07-17 14:56:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:10,113 INFO L225 Difference]: With dead ends: 34 [2020-07-17 14:56:10,113 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:56:10,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-07-17 14:56:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:56:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:56:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:56:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:56:10,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-17 14:56:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:10,120 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:56:10,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 14:56:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:56:10,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:56:10,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:56:10,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:56:10,754 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-07-17 14:56:10,895 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-07-17 14:56:11,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:56:11,108 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-07-17 14:56:11,109 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-07-17 14:56:11,109 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:56:11,109 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:56:11,109 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 14:56:11,109 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:56:11,110 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:56:11,110 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-17 14:56:11,110 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-17 14:56:11,110 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-07-17 14:56:11,110 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-07-17 14:56:11,110 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-17 14:56:11,111 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,111 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,111 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 68) the Hoare annotation is: (or (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_72~0)| ~__return_72~0)) [2020-07-17 14:56:11,111 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_72~0)| ~__return_72~0)) [2020-07-17 14:56:11,112 INFO L264 CegarLoopResult]: At program point L23(lines 23 66) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,112 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: false [2020-07-17 14:56:11,112 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,112 INFO L264 CegarLoopResult]: At program point L17(lines 17 67) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,112 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (not (= 0 main_~__tmp_1~0)))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 .cse3 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse5 (+ main_~main__i~0 main_~main__y~0)) (.cse4 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse4 .cse5) .cse0 .cse1 (<= .cse5 .cse4) .cse2 .cse3)))) [2020-07-17 14:56:11,113 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,113 INFO L264 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,113 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse4 (+ main_~main__i~0 main_~main__y~0)) (.cse3 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse3 .cse4) .cse0 .cse1 (<= .cse4 .cse3) .cse2)))) [2020-07-17 14:56:11,113 INFO L264 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,114 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 11 68) the Hoare annotation is: (or (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_72~0)| ~__return_72~0)) [2020-07-17 14:56:11,114 INFO L264 CegarLoopResult]: At program point L42(lines 42 64) the Hoare annotation is: (let ((.cse3 (<= main_~main__y~0 0)) (.cse8 (+ main_~main__j~0 main_~main__x~0)) (.cse7 (+ main_~main__i~0 main_~main__y~0)) (.cse1 (< 0 (+ main_~main__y~0 1)))) (let ((.cse2 (or (<= main_~main__j~0 .cse7) .cse1)) (.cse0 (<= .cse8 .cse7)) (.cse5 (or .cse3 (<= .cse7 main_~main__j~0))) (.cse4 (<= .cse7 .cse8)) (.cse6 (= |old(~__return_72~0)| ~__return_72~0))) (or (and (or .cse0 .cse1) .cse2 (<= main_~main__x~0 main_~main__i~0) (or .cse3 .cse4) .cse5 .cse6 (<= main_~main__i~0 main_~main__x~0)) (and .cse2 .cse0 .cse5 .cse4 .cse6)))) [2020-07-17 14:56:11,114 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-17 14:56:11,114 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (+ main_~main__j~0 main_~main__x~0 1)) (.cse0 (+ main_~main__i~0 main_~main__y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-17 14:56:11,115 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-17 14:56:11,115 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) the Hoare annotation is: false [2020-07-17 14:56:11,115 INFO L264 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,115 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~main__x~0 main_~main__i~0) (= |old(~__return_72~0)| ~__return_72~0) (<= main_~main__i~0 main_~main__x~0)) [2020-07-17 14:56:11,115 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,116 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (not (= 0 main_~__VERIFIER_assert__cond~0)) [2020-07-17 14:56:11,116 INFO L264 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: false [2020-07-17 14:56:11,116 INFO L264 CegarLoopResult]: At program point L49(lines 49 58) the Hoare annotation is: (let ((.cse0 (not (= 0 main_~__VERIFIER_assert__cond~0))) (.cse3 (<= main_~main__y~0 0)) (.cse4 (< 0 (+ main_~main__y~0 1))) (.cse5 (= |old(~__return_72~0)| ~__return_72~0)) (.cse6 (not (= 0 main_~__tmp_1~0)))) (or (let ((.cse2 (+ main_~main__i~0 main_~main__y~0)) (.cse1 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 (<= .cse1 .cse2) .cse3 .cse4 (<= .cse2 .cse1) .cse5 .cse6)) (and .cse0 (<= main_~main__x~0 main_~main__i~0) .cse3 .cse4 .cse5 .cse6 (<= main_~main__i~0 main_~main__x~0)))) [2020-07-17 14:56:11,116 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,116 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,117 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (not (= 0 main_~__tmp_1~0)))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 .cse3 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse5 (+ main_~main__i~0 main_~main__y~0)) (.cse4 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse4 .cse5) .cse0 .cse1 (<= .cse5 .cse4) .cse2 .cse3)))) [2020-07-17 14:56:11,117 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,117 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-17 14:56:11,117 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse4 (+ main_~main__i~0 main_~main__y~0)) (.cse3 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse3 .cse4) .cse0 .cse1 (<= .cse4 .cse3) .cse2)))) [2020-07-17 14:56:11,117 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (+ main_~main__j~0 main_~main__x~0 1)) (.cse0 (+ main_~main__i~0 main_~main__y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-17 14:56:11,118 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-17 14:56:11,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:56:11 BoogieIcfgContainer [2020-07-17 14:56:11,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:56:11,143 INFO L168 Benchmark]: Toolchain (without parser) took 4298.41 ms. Allocated memory was 144.7 MB in the beginning and 244.8 MB in the end (delta: 100.1 MB). Free memory was 101.6 MB in the beginning and 159.7 MB in the end (delta: -58.1 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:11,145 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 144.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 14:56:11,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.42 ms. Allocated memory is still 144.7 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:11,148 INFO L168 Benchmark]: Boogie Preprocessor took 191.43 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 91.5 MB in the beginning and 183.2 MB in the end (delta: -91.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:11,150 INFO L168 Benchmark]: RCFGBuilder took 353.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 168.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:11,152 INFO L168 Benchmark]: TraceAbstraction took 3284.63 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 168.7 MB in the beginning and 159.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 115.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:11,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 144.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.42 ms. Allocated memory is still 144.7 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.43 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 91.5 MB in the beginning and 183.2 MB in the end (delta: -91.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 168.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3284.63 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 168.7 MB in the beginning and 159.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 115.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: 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 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (main__j + main__x <= main__i + main__y && main__i + main__y <= main__j + main__x) && \old(__return_72) == __return_72 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: !(0 == __VERIFIER_assert__cond) || \old(__return_72) == __return_72 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 151 SDslu, 106 SDs, 0 SdLazy, 329 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 41 PreInvPairs, 63 NumberOfFragments, 541 HoareAnnotationTreeSize, 41 FomulaSimplifications, 560 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 41 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, 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 correct! Received shutdown request...