/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:38:01,174 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 03:38:01,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:38:01,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:38:01,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:38:01,224 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 [2020-07-20 03:38:01,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:38:01,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:38:01,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:38:01,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:38:01,240 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:38:01,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:38:01,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:38:01,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:38:01,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:38:01,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:38:01,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:38:01,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:38:01,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:38:01,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:38:01,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:38:01,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:38:01,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:38:01,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:38:01,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:38:01,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:38:01,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:38:01,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:38:01,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:38:01,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:38:01,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:38:01,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:38:01,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:38:01,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:38:01,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:38:01,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:38:01,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:38:01,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:38:01,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:38:01,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:38:01,574 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:38:01,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-07-20 03:38:01,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06ab274a2/e050d434dafa4d02bda26af1d37239a0/FLAGd5cf8f763 [2020-07-20 03:38:02,161 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:38:02,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-07-20 03:38:02,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06ab274a2/e050d434dafa4d02bda26af1d37239a0/FLAGd5cf8f763 [2020-07-20 03:38:02,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06ab274a2/e050d434dafa4d02bda26af1d37239a0 [2020-07-20 03:38:02,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:38:02,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:38:02,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:38:02,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:38:02,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:38:02,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6c299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02, skipping insertion in model container [2020-07-20 03:38:02,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:38:02,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:38:02,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:38:02,747 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:38:02,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:38:02,782 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:38:02,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02 WrapperNode [2020-07-20 03:38:02,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:38:02,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:38:02,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:38:02,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:38:02,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... [2020-07-20 03:38:02,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:38:02,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:38:02,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:38:02,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:38:02,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:38:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:38:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:38:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 03:38:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:38:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:38:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:38:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 03:38:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:38:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:38:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:38:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:38:02,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:38:02,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:38:02,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:38:03,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:38:03,257 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 03:38:03,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:38:03 BoogieIcfgContainer [2020-07-20 03:38:03,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:38:03,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:38:03,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:38:03,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:38:03,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:38:02" (1/3) ... [2020-07-20 03:38:03,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d160f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:38:03, skipping insertion in model container [2020-07-20 03:38:03,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:02" (2/3) ... [2020-07-20 03:38:03,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d160f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:38:03, skipping insertion in model container [2020-07-20 03:38:03,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:38:03" (3/3) ... [2020-07-20 03:38:03,271 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-07-20 03:38:03,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:38:03,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:38:03,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:38:03,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:38:03,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:38:03,333 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:38:03,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:38:03,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:38:03,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:38:03,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:38:03,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:38:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 03:38:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 03:38:03,361 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:03,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:03,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:03,372 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-07-20 03:38:03,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:03,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733216950] [2020-07-20 03:38:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38eb230a [2020-07-20 03:38:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:03,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733216950] [2020-07-20 03:38:03,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:03,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:38:03,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857321568] [2020-07-20 03:38:03,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:38:03,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:03,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:38:03,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:38:03,607 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-07-20 03:38:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:03,697 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-07-20 03:38:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:38:03,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-20 03:38:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:03,709 INFO L225 Difference]: With dead ends: 35 [2020-07-20 03:38:03,709 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 03:38:03,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:38:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 03:38:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 03:38:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 03:38:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 03:38:03,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-07-20 03:38:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:03,753 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 03:38:03,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:38:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 03:38:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 03:38:03,754 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:03,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:03,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:38:03,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-07-20 03:38:03,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:03,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625713917] [2020-07-20 03:38:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38eb230a [2020-07-20 03:38:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:03,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625713917] [2020-07-20 03:38:03,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:03,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:03,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292411630] [2020-07-20 03:38:03,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:03,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:03,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:03,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:03,926 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-07-20 03:38:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:04,006 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-07-20 03:38:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:38:04,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 03:38:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:04,008 INFO L225 Difference]: With dead ends: 27 [2020-07-20 03:38:04,008 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 03:38:04,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 03:38:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 03:38:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 03:38:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-20 03:38:04,016 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-07-20 03:38:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:04,017 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-20 03:38:04,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-20 03:38:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:38:04,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:04,019 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:04,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:38:04,019 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-07-20 03:38:04,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:04,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476761639] [2020-07-20 03:38:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38eb230a [2020-07-20 03:38:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:04,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476761639] [2020-07-20 03:38:04,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275656639] [2020-07-20 03:38:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@596c364c 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 [2020-07-20 03:38:04,358 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@596c364c issued 2 check-sat command(s) [2020-07-20 03:38:04,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:38:04,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 03:38:04,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:38:04,480 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-07-20 03:38:04,481 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:04,499 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:04,502 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:04,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:52 [2020-07-20 03:38:14,693 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 03:38:14,697 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:14,697 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 21 [2020-07-20 03:38:14,701 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:14,722 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:14,726 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:14,731 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:30 [2020-07-20 03:38:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:16,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:38:16,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-20 03:38:16,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632146877] [2020-07-20 03:38:16,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 03:38:16,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:16,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 03:38:16,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=77, Unknown=6, NotChecked=0, Total=110 [2020-07-20 03:38:16,849 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-07-20 03:38:17,615 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-07-20 03:38:19,674 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-20 03:38:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:19,803 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-20 03:38:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 03:38:19,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-07-20 03:38:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:19,805 INFO L225 Difference]: With dead ends: 29 [2020-07-20 03:38:19,806 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 03:38:19,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=62, Invalid=142, Unknown=6, NotChecked=0, Total=210 [2020-07-20 03:38:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 03:38:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 03:38:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 03:38:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-20 03:38:19,824 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-07-20 03:38:19,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:19,824 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-20 03:38:19,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 03:38:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-20 03:38:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:38:19,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:19,828 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:20,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 03:38:20,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:20,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:20,043 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-07-20 03:38:20,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:20,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592892676] [2020-07-20 03:38:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38eb230a [2020-07-20 03:38:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:20,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592892676] [2020-07-20 03:38:20,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608038700] [2020-07-20 03:38:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b7f3fe4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:38:20,258 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b7f3fe4 issued 3 check-sat command(s) [2020-07-20 03:38:20,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:38:20,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 03:38:20,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:38:20,279 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2020-07-20 03:38:20,279 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:20,290 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:20,291 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:38:20,291 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2020-07-20 03:38:20,386 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 03:38:20,389 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:20,389 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2020-07-20 03:38:20,391 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:20,399 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:20,400 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:20,400 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:30 [2020-07-20 03:38:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:22,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:38:22,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2020-07-20 03:38:22,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393354284] [2020-07-20 03:38:22,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 03:38:22,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:22,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 03:38:22,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2020-07-20 03:38:22,506 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2020-07-20 03:38:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:22,891 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-07-20 03:38:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 03:38:22,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-07-20 03:38:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:22,893 INFO L225 Difference]: With dead ends: 31 [2020-07-20 03:38:22,893 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 03:38:22,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=240, Unknown=1, NotChecked=0, Total=342 [2020-07-20 03:38:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 03:38:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 03:38:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 03:38:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-20 03:38:22,908 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-07-20 03:38:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:22,908 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-20 03:38:22,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 03:38:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-20 03:38:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:38:22,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:22,910 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:23,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:38:23,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-07-20 03:38:23,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:23,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250579598] [2020-07-20 03:38:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38eb230a [2020-07-20 03:38:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 03:38:23,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250579598] [2020-07-20 03:38:23,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388903112] [2020-07-20 03:38:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39ba7943 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:38:23,537 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39ba7943 issued 3 check-sat command(s) [2020-07-20 03:38:23,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:38:23,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 03:38:23,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:38:23,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2020-07-20 03:38:23,557 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:23,566 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:23,567 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:38:23,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2020-07-20 03:38:23,728 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 03:38:23,731 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:23,732 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2020-07-20 03:38:23,733 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:23,742 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:23,743 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:23,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:30 [2020-07-20 03:38:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:23,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:38:23,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2020-07-20 03:38:23,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466034781] [2020-07-20 03:38:23,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 03:38:23,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:23,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 03:38:23,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-07-20 03:38:23,805 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 16 states. [2020-07-20 03:38:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:24,907 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 03:38:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 03:38:24,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-07-20 03:38:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:24,908 INFO L225 Difference]: With dead ends: 31 [2020-07-20 03:38:24,908 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:38:24,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2020-07-20 03:38:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:38:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:38:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:38:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:38:24,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-07-20 03:38:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:24,912 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:38:24,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 03:38:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:38:24,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:38:25,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:38:25,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:38:25,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:38:25,224 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-20 03:38:25,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:38:25,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:38:25,224 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:38:25,225 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-07-20 03:38:25,225 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-07-20 03:38:25,226 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-07-20 03:38:25,226 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-07-20 03:38:25,226 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-20 03:38:25,226 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-07-20 03:38:25,226 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= .cse0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|))) (<= main_~i~0 .cse0) (= 0 |main_~#ad1~0.offset|))) [2020-07-20 03:38:25,227 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse1 (select |#memory_int| |main_~#ad1~0.base|))) (and (= .cse0 (select .cse1 (+ (* .cse0 8) |main_~#ad1~0.offset|))) (<= main_~i~0 .cse0) (= 0 |main_~#ad1~0.offset|) (= main_~i~0 (select .cse1 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))))) [2020-07-20 03:38:25,227 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-07-20 03:38:25,227 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-07-20 03:38:25,227 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-07-20 03:38:25,237 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:38:25 BoogieIcfgContainer [2020-07-20 03:38:25,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:38:25,250 INFO L168 Benchmark]: Toolchain (without parser) took 22731.45 ms. Allocated memory was 145.2 MB in the beginning and 246.4 MB in the end (delta: 101.2 MB). Free memory was 101.7 MB in the beginning and 188.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:25,250 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 03:38:25,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.16 ms. Allocated memory is still 145.2 MB. Free memory was 101.3 MB in the beginning and 90.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:25,252 INFO L168 Benchmark]: Boogie Preprocessor took 124.89 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 180.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:25,253 INFO L168 Benchmark]: RCFGBuilder took 353.19 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 166.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:25,254 INFO L168 Benchmark]: TraceAbstraction took 21984.16 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 165.4 MB in the beginning and 188.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:25,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.16 ms. Allocated memory is still 145.2 MB. Free memory was 101.3 MB in the beginning and 90.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.89 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 180.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.19 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 166.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21984.16 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 165.4 MB in the beginning and 188.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 26]: Loop Invariant [2020-07-20 03:38:25,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 03:38:25,269 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (unknown-#memory_int-unknown[pa][pa] == unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] && i <= unknown-#memory_int-unknown[pa][pa]) && 0 == ad1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 58 SDslu, 159 SDs, 0 SdLazy, 254 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 88 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 517 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 151 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 143 ConstructedInterpolants, 6 QuantifiedInterpolants, 26600 SizeOfPredicates, 20 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/40 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...