/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:34,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:34,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:34,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:57:34,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:57:34,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:57:34,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:57:34,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:57:34,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:57:34,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:57:34,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:57:34,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-08-22 16:57:34,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:57:34,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:34,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:34,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:34,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:34,801 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:34,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:34,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:34,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:34,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:34,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:34,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:34,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:34,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:34,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:34,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:34,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:34,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:34,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:34,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:34,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:34,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:34,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:34,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:34,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:34,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:34,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:34,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:34,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:34,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:34,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:35,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:35,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:35,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:35,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:35,138 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:35,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-08-22 16:57:35,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03936b94/bef1df5007f44a7eb954f4a536f33554/FLAGc494d9745 [2020-08-22 16:57:35,672 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:35,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-08-22 16:57:35,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03936b94/bef1df5007f44a7eb954f4a536f33554/FLAGc494d9745 [2020-08-22 16:57:36,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03936b94/bef1df5007f44a7eb954f4a536f33554 [2020-08-22 16:57:36,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:36,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:36,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:36,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:36,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:36,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32662f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36, skipping insertion in model container [2020-08-22 16:57:36,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:36,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:36,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:36,283 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:36,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:36,322 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:36,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36 WrapperNode [2020-08-22 16:57:36,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:36,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:36,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:36,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:36,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (1/1) ... [2020-08-22 16:57:36,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:36,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:36,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:36,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:36,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (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 16:57:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:57:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:57:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:57:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:57:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:36,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:36,733 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:57:36,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:36 BoogieIcfgContainer [2020-08-22 16:57:36,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:36,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:36,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:36,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:36,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:36" (1/3) ... [2020-08-22 16:57:36,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127b4541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:36, skipping insertion in model container [2020-08-22 16:57:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:36" (2/3) ... [2020-08-22 16:57:36,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127b4541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:36, skipping insertion in model container [2020-08-22 16:57:36,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:36" (3/3) ... [2020-08-22 16:57:36,778 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-08-22 16:57:36,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:36,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:36,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:36,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:36,879 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:36,879 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:36,879 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:36,879 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:36,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:36,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:36,880 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 16:57:36,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 16:57:36,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:36,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:36,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:36,909 INFO L82 PathProgramCache]: Analyzing trace with hash 921445730, now seen corresponding path program 1 times [2020-08-22 16:57:36,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:36,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849934551] [2020-08-22 16:57:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,138 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 16:57:37,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849934551] [2020-08-22 16:57:37,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:37,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:57:37,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617660002] [2020-08-22 16:57:37,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:57:37,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:57:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:37,159 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-08-22 16:57:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:37,294 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-08-22 16:57:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:57:37,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-22 16:57:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:37,303 INFO L225 Difference]: With dead ends: 51 [2020-08-22 16:57:37,303 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:57:37,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:57:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 16:57:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 16:57:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-22 16:57:37,342 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2020-08-22 16:57:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:37,342 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-22 16:57:37,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:57:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-22 16:57:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 16:57:37,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:37,344 INFO L422 BasicCegarLoop]: trace histogram [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 16:57:37,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:37,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash 487181509, now seen corresponding path program 1 times [2020-08-22 16:57:37,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:37,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881067072] [2020-08-22 16:57:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 16:57:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:37,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881067072] [2020-08-22 16:57:37,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:37,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:57:37,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113322946] [2020-08-22 16:57:37,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:57:37,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:37,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:57:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:37,464 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2020-08-22 16:57:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:37,542 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-08-22 16:57:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:57:37,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-22 16:57:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:37,545 INFO L225 Difference]: With dead ends: 38 [2020-08-22 16:57:37,545 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 16:57:37,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 16:57:37,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-08-22 16:57:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 16:57:37,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-08-22 16:57:37,560 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 23 [2020-08-22 16:57:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:37,560 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-08-22 16:57:37,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:57:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-08-22 16:57:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 16:57:37,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:37,563 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:37,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:37,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash 258938125, now seen corresponding path program 1 times [2020-08-22 16:57:37,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:37,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238137092] [2020-08-22 16:57:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 16:57:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:57:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 16:57:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 16:57:37,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238137092] [2020-08-22 16:57:37,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061041559] [2020-08-22 16:57:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-08-22 16:57:37,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:38,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:38,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:38,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2020-08-22 16:57:38,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818847938] [2020-08-22 16:57:38,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 16:57:38,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:38,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 16:57:38,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:57:38,137 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2020-08-22 16:57:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:38,340 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-08-22 16:57:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:57:38,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-08-22 16:57:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:38,342 INFO L225 Difference]: With dead ends: 41 [2020-08-22 16:57:38,342 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:57:38,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:57:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:57:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:57:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:57:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:57:38,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-08-22 16:57:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:38,344 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:57:38,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 16:57:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:57:38,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:57:38,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:57:38,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:57:38,666 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:57:38,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:57:38,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:57:38,666 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:57:38,667 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:57:38,667 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:57:38,667 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:57:38,667 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 16:57:38,667 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:57:38,667 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:57:38,667 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L27-1(lines 14 45) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L28(lines 14 45) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L29(lines 14 45) no Hoare annotation was computed. [2020-08-22 16:57:38,668 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-22 16:57:38,669 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 42) no Hoare annotation was computed. [2020-08-22 16:57:38,669 INFO L264 CegarLoopResult]: At program point L38-3(lines 38 42) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2020-08-22 16:57:38,669 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-08-22 16:57:38,669 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-08-22 16:57:38,669 INFO L271 CegarLoopResult]: At program point L43(lines 13 45) the Hoare annotation is: true [2020-08-22 16:57:38,670 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-22 16:57:38,670 INFO L264 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-08-22 16:57:38,670 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 16:57:38,670 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:57:38,670 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 16:57:38,670 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 16:57:38,671 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:57:38,671 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 16:57:38,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:57:38 BoogieIcfgContainer [2020-08-22 16:57:38,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:57:38,691 INFO L168 Benchmark]: Toolchain (without parser) took 2645.24 ms. Allocated memory was 137.4 MB in the beginning and 228.6 MB in the end (delta: 91.2 MB). Free memory was 100.3 MB in the beginning and 148.0 MB in the end (delta: -47.7 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:38,692 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:57:38,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.70 ms. Allocated memory is still 137.4 MB. Free memory was 100.1 MB in the beginning and 90.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:38,694 INFO L168 Benchmark]: Boogie Preprocessor took 118.16 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 177.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:38,695 INFO L168 Benchmark]: RCFGBuilder took 297.51 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 163.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:38,696 INFO L168 Benchmark]: TraceAbstraction took 1935.35 ms. Allocated memory was 199.8 MB in the beginning and 228.6 MB in the end (delta: 28.8 MB). Free memory was 162.5 MB in the beginning and 148.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:38,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.70 ms. Allocated memory is still 137.4 MB. Free memory was 100.1 MB in the beginning and 90.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.16 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 177.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 297.51 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 163.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1935.35 ms. Allocated memory was 199.8 MB in the beginning and 228.6 MB in the end (delta: 28.8 MB). Free memory was 162.5 MB in the beginning and 148.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 43.3 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 39 SDslu, 324 SDs, 0 SdLazy, 167 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 9578 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 39/44 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...