/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-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:48:24,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:48:24,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:48:24,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:48:24,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:48:24,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:48:24,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:48:24,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:48:24,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:48:24,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:48:24,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:48:24,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:48:24,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:48:24,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:48:24,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:48:24,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:48:24,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:48:24,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:48:24,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:48:24,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:48:24,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:48:24,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:48:24,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:48:24,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:48:24,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:48:24,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:48:24,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:48:24,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:48:24,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:48:24,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:48:24,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:48:24,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:48:24,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:48:24,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:48:24,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:48:24,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:48:24,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:48:24,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:48:24,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:48:24,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:48:24,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:48:24,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:48:24,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:48:24,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:48:24,351 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:48:24,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:48:24,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:48:24,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:48:24,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:48:24,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:48:24,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:48:24,353 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:48:24,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:48:24,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:48:24,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:48:24,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:48:24,717 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:48:24,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-08-22 19:48:24,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172b52cdd/728e23facea841e8826cc0a602584e30/FLAG2f129ca6d [2020-08-22 19:48:25,281 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:48:25,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2020-08-22 19:48:25,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172b52cdd/728e23facea841e8826cc0a602584e30/FLAG2f129ca6d [2020-08-22 19:48:25,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172b52cdd/728e23facea841e8826cc0a602584e30 [2020-08-22 19:48:25,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:48:25,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:48:25,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:48:25,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:48:25,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:48:25,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:25,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74fa6231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25, skipping insertion in model container [2020-08-22 19:48:25,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:25,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:48:25,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:48:25,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:48:25,881 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:48:25,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:48:25,917 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:48:25,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25 WrapperNode [2020-08-22 19:48:25,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:48:25,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:48:25,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:48:25,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:48:25,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:25,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:26,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:26,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:26,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:26,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:26,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (1/1) ... [2020-08-22 19:48:26,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:48:26,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:48:26,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:48:26,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:48:26,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (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 [2020-08-22 19:48:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:48:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:48:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:48:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:48:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:48:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:48:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:48:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:48:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:48:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:48:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:48:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:48:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:48:26,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:48:26,370 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:48:26,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:48:26 BoogieIcfgContainer [2020-08-22 19:48:26,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:48:26,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:48:26,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:48:26,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:48:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:48:25" (1/3) ... [2020-08-22 19:48:26,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce72c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:48:26, skipping insertion in model container [2020-08-22 19:48:26,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:48:25" (2/3) ... [2020-08-22 19:48:26,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce72c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:48:26, skipping insertion in model container [2020-08-22 19:48:26,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:48:26" (3/3) ... [2020-08-22 19:48:26,393 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-08-22 19:48:26,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:48:26,420 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:48:26,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:48:26,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:48:26,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:48:26,479 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:48:26,479 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:48:26,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:48:26,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:48:26,480 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:48:26,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:48:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-22 19:48:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 19:48:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:26,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:26,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 789700725, now seen corresponding path program 1 times [2020-08-22 19:48:26,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:26,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369658995] [2020-08-22 19:48:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:26,612 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:26,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369658995] [2020-08-22 19:48:26,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:26,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 19:48:26,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857804347] [2020-08-22 19:48:26,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 19:48:26,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:26,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 19:48:26,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 19:48:26,730 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-08-22 19:48:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:26,763 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-08-22 19:48:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 19:48:26,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-08-22 19:48:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:26,774 INFO L225 Difference]: With dead ends: 44 [2020-08-22 19:48:26,774 INFO L226 Difference]: Without dead ends: 24 [2020-08-22 19:48:26,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 19:48:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-22 19:48:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-22 19:48:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-22 19:48:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-22 19:48:26,822 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2020-08-22 19:48:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:26,823 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-22 19:48:26,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 19:48:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-22 19:48:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 19:48:26,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:26,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:26,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:48:26,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:26,826 INFO L82 PathProgramCache]: Analyzing trace with hash 774924389, now seen corresponding path program 1 times [2020-08-22 19:48:26,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:26,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452139656] [2020-08-22 19:48:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:26,829 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:27,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452139656] [2020-08-22 19:48:27,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:27,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:48:27,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158635] [2020-08-22 19:48:27,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:48:27,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:48:27,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:48:27,069 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-08-22 19:48:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:27,248 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-08-22 19:48:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:48:27,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-08-22 19:48:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:27,253 INFO L225 Difference]: With dead ends: 43 [2020-08-22 19:48:27,253 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 19:48:27,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:48:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 19:48:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2020-08-22 19:48:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 19:48:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-08-22 19:48:27,266 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2020-08-22 19:48:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:27,267 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-08-22 19:48:27,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:48:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-08-22 19:48:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 19:48:27,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:27,268 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] [2020-08-22 19:48:27,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:48:27,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash 775379929, now seen corresponding path program 1 times [2020-08-22 19:48:27,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:27,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708636819] [2020-08-22 19:48:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:27,296 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:27,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708636819] [2020-08-22 19:48:27,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:27,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:48:27,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022917199] [2020-08-22 19:48:27,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:48:27,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:27,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:48:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:48:27,480 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2020-08-22 19:48:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:27,779 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-08-22 19:48:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:48:27,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-08-22 19:48:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:27,781 INFO L225 Difference]: With dead ends: 48 [2020-08-22 19:48:27,782 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 19:48:27,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:48:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 19:48:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2020-08-22 19:48:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 19:48:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-08-22 19:48:27,793 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2020-08-22 19:48:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:27,793 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-08-22 19:48:27,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:48:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-08-22 19:48:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 19:48:27,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:27,795 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] [2020-08-22 19:48:27,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:48:27,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:27,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1973531292, now seen corresponding path program 1 times [2020-08-22 19:48:27,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:27,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682625578] [2020-08-22 19:48:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:27,810 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:27,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:27,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682625578] [2020-08-22 19:48:27,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:27,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:48:27,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836065857] [2020-08-22 19:48:27,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:48:27,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:27,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:48:27,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:48:27,969 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2020-08-22 19:48:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:28,094 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-08-22 19:48:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 19:48:28,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-22 19:48:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:28,095 INFO L225 Difference]: With dead ends: 58 [2020-08-22 19:48:28,095 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 19:48:28,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:48:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 19:48:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-08-22 19:48:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 19:48:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-08-22 19:48:28,105 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 24 [2020-08-22 19:48:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:28,106 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-08-22 19:48:28,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:48:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-08-22 19:48:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 19:48:28,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:28,107 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, 1, 1, 1] [2020-08-22 19:48:28,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:48:28,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1981883390, now seen corresponding path program 1 times [2020-08-22 19:48:28,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:28,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659712030] [2020-08-22 19:48:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:28,114 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:28,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659712030] [2020-08-22 19:48:28,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:28,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:48:28,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078903046] [2020-08-22 19:48:28,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:48:28,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:28,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:48:28,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:48:28,432 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 14 states. [2020-08-22 19:48:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:28,929 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-08-22 19:48:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 19:48:28,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2020-08-22 19:48:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:28,931 INFO L225 Difference]: With dead ends: 67 [2020-08-22 19:48:28,931 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 19:48:28,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-08-22 19:48:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 19:48:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-22 19:48:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 19:48:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-08-22 19:48:28,942 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 29 [2020-08-22 19:48:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:28,944 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-08-22 19:48:28,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:48:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-08-22 19:48:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 19:48:28,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:28,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:28,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:48:28,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash -282773191, now seen corresponding path program 2 times [2020-08-22 19:48:28,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:28,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292017669] [2020-08-22 19:48:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:28,956 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:29,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292017669] [2020-08-22 19:48:29,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:29,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:48:29,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687172277] [2020-08-22 19:48:29,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:48:29,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:29,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:48:29,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:48:29,122 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 10 states. [2020-08-22 19:48:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:29,618 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-08-22 19:48:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 19:48:29,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-08-22 19:48:29,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:29,621 INFO L225 Difference]: With dead ends: 65 [2020-08-22 19:48:29,621 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 19:48:29,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:48:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 19:48:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2020-08-22 19:48:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-22 19:48:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-08-22 19:48:29,642 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 37 [2020-08-22 19:48:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:29,643 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-08-22 19:48:29,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:48:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-08-22 19:48:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 19:48:29,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:48:29,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:48:29,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:48:29,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:48:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:48:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1065873285, now seen corresponding path program 3 times [2020-08-22 19:48:29,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:48:29,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172836708] [2020-08-22 19:48:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:48:29,650 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:48:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:48:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:48:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:48:29,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172836708] [2020-08-22 19:48:29,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:48:29,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 19:48:29,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340757512] [2020-08-22 19:48:29,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 19:48:29,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:48:29,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 19:48:29,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:48:29,992 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 15 states. [2020-08-22 19:48:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:48:30,520 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-08-22 19:48:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 19:48:30,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-08-22 19:48:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:48:30,521 INFO L225 Difference]: With dead ends: 71 [2020-08-22 19:48:30,521 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 19:48:30,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:48:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 19:48:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 19:48:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 19:48:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 19:48:30,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-08-22 19:48:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:48:30,527 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 19:48:30,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 19:48:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 19:48:30,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 19:48:30,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:48:30,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 19:48:31,010 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2020-08-22 19:48:31,238 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:48:31,239 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:48:31,239 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:48:31,239 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 19:48:31,239 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 19:48:31,239 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:48:31,240 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:31,240 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:31,240 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 19:48:31,240 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 19:48:31,240 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 19:48:31,241 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 25) the Hoare annotation is: true [2020-08-22 19:48:31,241 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-22 19:48:31,242 INFO L264 CegarLoopResult]: At program point L19(lines 19 21) the Hoare annotation is: (let ((.cse2 (* 2 main_~k~0)) (.cse0 (* 2 main_~n~0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 .cse2))) (and (<= (+ main_~i~0 2) .cse2) (<= .cse0 main_~i~0) (<= main_~i~0 .cse0)))) [2020-08-22 19:48:31,242 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= 0 main_~n~0) (<= main_~i~0 0) (<= main_~n~0 0) (<= 0 main_~i~0)) [2020-08-22 19:48:31,242 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-08-22 19:48:31,242 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (<= main_~i~0 0) (<= 0 main_~i~0)) [2020-08-22 19:48:31,242 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 25) the Hoare annotation is: true [2020-08-22 19:48:31,242 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2020-08-22 19:48:31,243 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (and (<= (+ main_~i~0 2) (* 2 main_~k~0)) (<= .cse0 main_~i~0) (<= main_~i~0 .cse0))) [2020-08-22 19:48:31,243 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0)) (.cse0 (* 2 |main_#t~post2|))) (and (<= (+ main_~i~0 2) (* 2 main_~k~0)) (<= .cse0 main_~i~0) (<= .cse1 main_~i~0) (<= main_~i~0 .cse1) (<= main_~i~0 .cse0))) [2020-08-22 19:48:31,243 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 0 main_~n~0) (<= main_~i~0 0) (<= main_~n~0 0) (<= 0 main_~i~0)) [2020-08-22 19:48:31,243 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0)) (.cse0 (+ main_~i~0 2)) (.cse1 (* 2 |main_#t~post2|))) (and (<= .cse0 (* 2 main_~k~0)) (<= .cse1 main_~i~0) (<= .cse0 .cse2) (<= .cse2 .cse0) (<= main_~i~0 .cse1))) [2020-08-22 19:48:31,244 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= 0 main_~n~0) (<= main_~i~0 0) (<= main_~n~0 0) (<= 0 main_~i~0)) [2020-08-22 19:48:31,244 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (<= 0 main_~n~0) (<= main_~i~0 0) (<= main_~n~0 0) (<= 0 main_~i~0)) [2020-08-22 19:48:31,244 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0)) (.cse1 (* 2 main_~k~0))) (or (let ((.cse0 (+ main_~i~0 2))) (and (<= .cse0 .cse1) (<= .cse0 .cse2) (<= .cse2 .cse0))) (let ((.cse3 (+ main_~i~0 1))) (and (<= .cse2 .cse3) (<= .cse3 .cse2) (<= .cse3 .cse1))))) [2020-08-22 19:48:31,244 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (and (<= 0 main_~n~0) (<= main_~i~0 0) (<= main_~n~0 0) (<= 0 main_~i~0)) [2020-08-22 19:48:31,244 INFO L264 CegarLoopResult]: At program point L18-4(line 18) the Hoare annotation is: (let ((.cse3 (* 2 main_~k~0)) (.cse0 (* 2 main_~n~0))) (or (let ((.cse2 (+ |main_#t~post1| 1)) (.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse0 .cse2) (<= .cse1 .cse0) (<= .cse2 .cse0) (<= .cse1 .cse3))) (let ((.cse4 (+ |main_#t~post1| 2)) (.cse5 (+ main_~i~0 2))) (and (<= .cse4 .cse3) (<= .cse5 .cse0) (<= .cse0 .cse4) (<= .cse4 .cse0) (<= .cse0 .cse5))))) [2020-08-22 19:48:31,245 INFO L264 CegarLoopResult]: At program point L18-5(line 18) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (or (let ((.cse1 (+ |main_#t~post1| 1))) (and (<= .cse0 .cse1) (<= .cse0 main_~i~0) (<= main_~i~0 .cse0) (<= .cse1 .cse0) (< main_~n~0 (+ main_~k~0 1)))) (let ((.cse3 (+ |main_#t~post1| 2)) (.cse2 (+ main_~i~0 1))) (and (<= .cse0 .cse2) (<= .cse2 .cse0) (<= .cse0 .cse3) (<= .cse3 .cse0) (<= .cse2 (* 2 main_~k~0)))))) [2020-08-22 19:48:31,245 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 22) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse1))) (or (and (<= main_~n~0 0) (<= 0 main_~i~0) .cse0) (let ((.cse2 (+ main_~i~0 1))) (and (<= .cse1 .cse2) (<= .cse2 .cse1) (<= .cse2 (* 2 main_~k~0)))) (and (<= .cse1 main_~i~0) .cse0 (< main_~n~0 (+ main_~k~0 1)))))) [2020-08-22 19:48:31,245 INFO L264 CegarLoopResult]: At program point L18-7(lines 18 22) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 main_~n~0))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) (<= main_~i~0 (+ (* 2 main_~n~0) 1)) .cse0) (and .cse0 (< main_~n~0 (+ main_~k~0 1))))) [2020-08-22 19:48:31,245 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:31,246 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:31,246 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:48:31,246 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))) [2020-08-22 19:48:31,246 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-08-22 19:48:31,246 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:48:31,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:48:31 BoogieIcfgContainer [2020-08-22 19:48:31,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:48:31,288 INFO L168 Benchmark]: Toolchain (without parser) took 5652.79 ms. Allocated memory was 137.4 MB in the beginning and 285.2 MB in the end (delta: 147.8 MB). Free memory was 101.7 MB in the beginning and 217.5 MB in the end (delta: -115.7 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:31,292 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 19:48:31,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.84 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:31,297 INFO L168 Benchmark]: Boogie Preprocessor took 120.84 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 92.0 MB in the beginning and 180.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:31,298 INFO L168 Benchmark]: RCFGBuilder took 335.32 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:31,299 INFO L168 Benchmark]: TraceAbstraction took 4907.54 ms. Allocated memory was 201.9 MB in the beginning and 285.2 MB in the end (delta: 83.4 MB). Free memory was 166.2 MB in the beginning and 217.5 MB in the end (delta: -51.3 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:48:31,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.84 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.84 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 92.0 MB in the beginning and 180.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.32 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4907.54 ms. Allocated memory was 201.9 MB in the beginning and 285.2 MB in the end (delta: 83.4 MB). Free memory was 166.2 MB in the beginning and 217.5 MB in the end (delta: -51.3 MB). Peak memory consumption was 120.6 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: 18]: Loop Invariant Derived loop invariant: (((n <= 0 && 0 <= i) && i <= 2 * n) || ((2 * n <= i + 1 && i + 1 <= 2 * n) && i + 1 <= 2 * k)) || ((2 * n <= i && i <= 2 * n) && n < k + 1) - 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, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 147 SDslu, 617 SDs, 0 SdLazy, 631 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=6, 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, 7 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 80 PreInvPairs, 132 NumberOfFragments, 482 HoareAnnotationTreeSize, 80 FomulaSimplifications, 958 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 32 FomulaSimplificationsInter, 702 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...