/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:14:56,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:14:56,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:14:56,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:14:56,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:14:56,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:14:56,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:14:56,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:14:56,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:14:56,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:14:56,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:14:56,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:14:56,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:14:56,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:14:56,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:14:56,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:14:56,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:14:56,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:14:56,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:14:56,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:14:56,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:14:56,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:14:56,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:14:56,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:14:56,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:14:56,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:14:56,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:14:56,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:14:56,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:14:56,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:14:56,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:14:56,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:14:56,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:14:56,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:14:56,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:14:56,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:14:56,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:14:56,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:14:56,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:14:56,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:14:56,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:14:56,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:14:56,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:14:56,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:14:56,432 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:14:56,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:14:56,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:14:56,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:14:56,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:14:56,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:14:56,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:14:56,434 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:14:56,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:14:56,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:14:56,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:14:56,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:14:56,945 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:14:56,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-09-04 23:14:57,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460eedf18/0ff2437a633c4834917c161e31936158/FLAG705cfb5fd [2020-09-04 23:14:57,687 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:14:57,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-09-04 23:14:57,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460eedf18/0ff2437a633c4834917c161e31936158/FLAG705cfb5fd [2020-09-04 23:14:58,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460eedf18/0ff2437a633c4834917c161e31936158 [2020-09-04 23:14:58,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:14:58,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:14:58,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:14:58,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:14:58,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:14:58,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326bde77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58, skipping insertion in model container [2020-09-04 23:14:58,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:14:58,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:14:58,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:14:58,332 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:14:58,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:14:58,379 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:14:58,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58 WrapperNode [2020-09-04 23:14:58,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:14:58,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:14:58,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:14:58,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:14:58,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... [2020-09-04 23:14:58,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:14:58,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:14:58,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:14:58,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:14:58,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:14:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:14:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:14:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:14:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:14:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:14:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:14:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:14:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:14:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:14:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:14:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:14:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:14:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:14:58,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:14:58,872 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:14:58,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:14:58 BoogieIcfgContainer [2020-09-04 23:14:58,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:14:58,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:14:58,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:14:58,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:14:58,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:14:58" (1/3) ... [2020-09-04 23:14:58,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d1c7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:14:58, skipping insertion in model container [2020-09-04 23:14:58,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:14:58" (2/3) ... [2020-09-04 23:14:58,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d1c7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:14:58, skipping insertion in model container [2020-09-04 23:14:58,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:14:58" (3/3) ... [2020-09-04 23:14:58,890 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-09-04 23:14:58,906 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:14:58,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:14:58,987 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:14:59,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:14:59,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:14:59,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:14:59,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:14:59,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:14:59,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:14:59,055 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:14:59,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:14:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-04 23:14:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 23:14:59,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:14:59,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:14:59,098 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:14:59,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:14:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash 627729613, now seen corresponding path program 1 times [2020-09-04 23:14:59,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:14:59,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141291341] [2020-09-04 23:14:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:14:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:14:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:14:59,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141291341] [2020-09-04 23:14:59,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:14:59,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:14:59,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248375287] [2020-09-04 23:14:59,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:14:59,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:14:59,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:14:59,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:14:59,362 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-09-04 23:14:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:14:59,446 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-09-04 23:14:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:14:59,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 23:14:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:14:59,459 INFO L225 Difference]: With dead ends: 43 [2020-09-04 23:14:59,459 INFO L226 Difference]: Without dead ends: 23 [2020-09-04 23:14:59,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:14:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-04 23:14:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-04 23:14:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-04 23:14:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-04 23:14:59,520 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-09-04 23:14:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:14:59,521 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-04 23:14:59,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:14:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-04 23:14:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 23:14:59,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:14:59,523 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] [2020-09-04 23:14:59,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:14:59,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:14:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:14:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1623753589, now seen corresponding path program 1 times [2020-09-04 23:14:59,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:14:59,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421090501] [2020-09-04 23:14:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:14:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:14:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:14:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:14:59,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421090501] [2020-09-04 23:14:59,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:14:59,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:14:59,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047515961] [2020-09-04 23:14:59,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:14:59,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:14:59,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:14:59,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:14:59,942 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2020-09-04 23:15:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:00,180 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-09-04 23:15:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 23:15:00,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-09-04 23:15:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:00,182 INFO L225 Difference]: With dead ends: 33 [2020-09-04 23:15:00,183 INFO L226 Difference]: Without dead ends: 28 [2020-09-04 23:15:00,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-04 23:15:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-04 23:15:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-09-04 23:15:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 23:15:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-04 23:15:00,196 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2020-09-04 23:15:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:00,197 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-04 23:15:00,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:15:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-04 23:15:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 23:15:00,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:00,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:00,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:15:00,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:00,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1189706423, now seen corresponding path program 2 times [2020-09-04 23:15:00,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:00,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294942208] [2020-09-04 23:15:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 23:15:00,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294942208] [2020-09-04 23:15:00,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:00,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 23:15:00,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268684920] [2020-09-04 23:15:00,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 23:15:00,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:00,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 23:15:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-04 23:15:00,567 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2020-09-04 23:15:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:00,894 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-04 23:15:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 23:15:00,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-09-04 23:15:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:00,895 INFO L225 Difference]: With dead ends: 27 [2020-09-04 23:15:00,895 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:15:00,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-09-04 23:15:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:15:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:15:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:15:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:15:00,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-04 23:15:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:00,898 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:15:00,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 23:15:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:15:00,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:15:00,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:15:00,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:15:01,150 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:15:01,151 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:15:01,151 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:15:01,151 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:15:01,151 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:15:01,151 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:15:01,152 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-04 23:15:01,152 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 23:15:01,152 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 23:15:01,152 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-04 23:15:01,152 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 23:15:01,152 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 26) the Hoare annotation is: true [2020-09-04 23:15:01,153 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 1))) (and (<= (+ main_~lo~0 1) main_~hi~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:01,153 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-09-04 23:15:01,153 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2020-09-04 23:15:01,154 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-09-04 23:15:01,154 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 23) the Hoare annotation is: (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 main_~lo~0)) [2020-09-04 23:15:01,154 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 23:15:01,154 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 26) the Hoare annotation is: true [2020-09-04 23:15:01,154 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-04 23:15:01,154 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-09-04 23:15:01,155 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 2))) (and (< 0 main_~mid~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:15:01,155 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~hi~0 .cse0) (<= (+ main_~lo~0 2) main_~hi~0) (<= .cse0 main_~hi~0))) [2020-09-04 23:15:01,155 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0) (<= (+ main_~lo~0 2) (* 2 main_~mid~0))) [2020-09-04 23:15:01,155 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-09-04 23:15:01,155 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-09-04 23:15:01,156 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-09-04 23:15:01,156 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-09-04 23:15:01,156 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-09-04 23:15:01,156 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 23:15:01,156 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-09-04 23:15:01,156 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:15:01,157 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:15:01,157 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-09-04 23:15:01,157 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:15:01,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:15:01 BoogieIcfgContainer [2020-09-04 23:15:01,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:15:01,187 INFO L168 Benchmark]: Toolchain (without parser) took 3144.36 ms. Allocated memory was 146.8 MB in the beginning and 234.4 MB in the end (delta: 87.6 MB). Free memory was 103.0 MB in the beginning and 131.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:01,188 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:15:01,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.01 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:01,190 INFO L168 Benchmark]: Boogie Preprocessor took 38.35 ms. Allocated memory is still 146.8 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:01,192 INFO L168 Benchmark]: RCFGBuilder took 459.25 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 170.2 MB in the end (delta: -78.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:01,193 INFO L168 Benchmark]: TraceAbstraction took 2302.82 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 170.2 MB in the beginning and 131.1 MB in the end (delta: 39.1 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:15:01,197 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.01 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.35 ms. Allocated memory is still 146.8 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.25 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 170.2 MB in the end (delta: -78.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2302.82 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 170.2 MB in the beginning and 131.1 MB in the end (delta: 39.1 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: (lo <= hi && hi <= 2 * mid + lo) && 2 * mid + lo <= hi - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 17 SDslu, 166 SDs, 0 SdLazy, 186 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 42 PreInvPairs, 57 NumberOfFragments, 164 HoareAnnotationTreeSize, 42 FomulaSimplifications, 145 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 8401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/7 InterpolantCoveringCapability, 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...