/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:18,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:18,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:18,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:11:18,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:11:18,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:11:18,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:11:18,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:11:18,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:11:18,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:11:18,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:11:18,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 22:11:18,129 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 [2019-11-23 22:11:18,159 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:18,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:18,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:18,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:18,160 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:18,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:18,161 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:18,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:18,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:18,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:18,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:18,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:18,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:18,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:18,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:18,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:18,165 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:18,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:18,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:18,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:18,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:18,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:18,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:18,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:18,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:18,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:18,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:18,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:18,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:18,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:18,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:18,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:18,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:18,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:18,455 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:18,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2019-11-23 22:11:18,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c617d81/1fadbb66d3f7404495d3d3a9dae0dd2d/FLAG3d7500131 [2019-11-23 22:11:18,975 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:18,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2019-11-23 22:11:18,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c617d81/1fadbb66d3f7404495d3d3a9dae0dd2d/FLAG3d7500131 [2019-11-23 22:11:19,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c617d81/1fadbb66d3f7404495d3d3a9dae0dd2d [2019-11-23 22:11:19,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:19,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:19,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:19,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:19,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:19,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a736ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19, skipping insertion in model container [2019-11-23 22:11:19,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:19,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:19,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:19,628 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:19,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:19,658 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:19,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19 WrapperNode [2019-11-23 22:11:19,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:19,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:19,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:19,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:19,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:19,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:19,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:19,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:19,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (1/1) ... [2019-11-23 22:11:19,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:19,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:19,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:19,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:19,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (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 [2019-11-23 22:11:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:19,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:19,985 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:19,985 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:11:19,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:19 BoogieIcfgContainer [2019-11-23 22:11:19,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:19,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:19,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:19,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:19,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:19" (1/3) ... [2019-11-23 22:11:19,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfa8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:19, skipping insertion in model container [2019-11-23 22:11:19,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:19" (2/3) ... [2019-11-23 22:11:19,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfa8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:19, skipping insertion in model container [2019-11-23 22:11:19,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:19" (3/3) ... [2019-11-23 22:11:19,995 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2019-11-23 22:11:20,004 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:20,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:11:20,023 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:11:20,047 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:20,047 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:20,047 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:20,048 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:20,048 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:20,048 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:20,048 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:20,048 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-23 22:11:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:11:20,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:20,065 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:11:20,065 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-23 22:11:20,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:20,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504527177] [2019-11-23 22:11:20,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:20,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504527177] [2019-11-23 22:11:20,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:20,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:11:20,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905156258] [2019-11-23 22:11:20,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:11:20,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:20,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:11:20,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:11:20,219 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-23 22:11:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:20,256 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-11-23 22:11:20,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:11:20,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-23 22:11:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:20,269 INFO L225 Difference]: With dead ends: 19 [2019-11-23 22:11:20,269 INFO L226 Difference]: Without dead ends: 7 [2019-11-23 22:11:20,273 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:11:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-23 22:11:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-23 22:11:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-23 22:11:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-23 22:11:20,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-23 22:11:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:20,336 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-23 22:11:20,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:11:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-23 22:11:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:11:20,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:20,338 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:11:20,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:20,339 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-11-23 22:11:20,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:20,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433797646] [2019-11-23 22:11:20,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:20,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433797646] [2019-11-23 22:11:20,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813714892] [2019-11-23 22:11:20,398 INFO L94 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 [2019-11-23 22:11:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:20,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:11:20,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:20,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:20,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-11-23 22:11:20,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849682057] [2019-11-23 22:11:20,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:11:20,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:20,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:11:20,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:11:20,537 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-11-23 22:11:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:20,557 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-23 22:11:20,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:11:20,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-23 22:11:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:20,558 INFO L225 Difference]: With dead ends: 12 [2019-11-23 22:11:20,559 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 22:11:20,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:11:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 22:11:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 22:11:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 22:11:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-23 22:11:20,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-23 22:11:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:20,564 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-23 22:11:20,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:11:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-23 22:11:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:11:20,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:20,566 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-23 22:11:20,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:20,770 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:20,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-11-23 22:11:20,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:20,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173871949] [2019-11-23 22:11:20,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:20,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173871949] [2019-11-23 22:11:20,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520907982] [2019-11-23 22:11:20,841 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-23 22:11:20,864 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:11:20,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:20,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 22:11:20,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:20,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:20,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-11-23 22:11:20,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143136998] [2019-11-23 22:11:20,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:11:20,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:20,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:11:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:20,924 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2019-11-23 22:11:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:20,971 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-23 22:11:20,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:20,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-23 22:11:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:20,974 INFO L225 Difference]: With dead ends: 13 [2019-11-23 22:11:20,974 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 22:11:20,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 22:11:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 22:11:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 22:11:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-23 22:11:20,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-23 22:11:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:20,981 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-23 22:11:20,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:11:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-23 22:11:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:11:20,982 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:20,982 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2019-11-23 22:11:21,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:21,188 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 516237138, now seen corresponding path program 3 times [2019-11-23 22:11:21,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:21,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245861091] [2019-11-23 22:11:21,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:21,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245861091] [2019-11-23 22:11:21,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329477533] [2019-11-23 22:11:21,268 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-11-23 22:11:21,297 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:11:21,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:21,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:21,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:21,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-23 22:11:21,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007365913] [2019-11-23 22:11:21,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:11:21,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:21,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:11:21,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:21,366 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-11-23 22:11:21,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:21,397 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-23 22:11:21,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:11:21,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-11-23 22:11:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:21,398 INFO L225 Difference]: With dead ends: 14 [2019-11-23 22:11:21,399 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 22:11:21,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 22:11:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 22:11:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:11:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-23 22:11:21,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-11-23 22:11:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:21,403 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-23 22:11:21,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:11:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-23 22:11:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:11:21,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:21,404 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2019-11-23 22:11:21,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:21,611 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:21,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1174852536, now seen corresponding path program 4 times [2019-11-23 22:11:21,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:21,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072222229] [2019-11-23 22:11:21,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:21,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072222229] [2019-11-23 22:11:21,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896490150] [2019-11-23 22:11:21,760 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:21,805 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:11:21,806 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:21,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-23 22:11:21,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:21,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:21,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:21,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-23 22:11:21,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169809630] [2019-11-23 22:11:21,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:11:21,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:21,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:11:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:11:21,847 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2019-11-23 22:11:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:21,909 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-23 22:11:21,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:11:21,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2019-11-23 22:11:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:21,911 INFO L225 Difference]: With dead ends: 15 [2019-11-23 22:11:21,911 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:11:21,911 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:11:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:11:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:11:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-23 22:11:21,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-11-23 22:11:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:21,915 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-23 22:11:21,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:11:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-23 22:11:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:11:21,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:21,916 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2019-11-23 22:11:22,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:22,120 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:22,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:22,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2059024878, now seen corresponding path program 5 times [2019-11-23 22:11:22,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:22,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115740307] [2019-11-23 22:11:22,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:22,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115740307] [2019-11-23 22:11:22,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:22,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-23 22:11:22,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7690207] [2019-11-23 22:11:22,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:11:22,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:11:22,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:11:22,191 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-11-23 22:11:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:22,202 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-11-23 22:11:22,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:11:22,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-23 22:11:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:22,208 INFO L225 Difference]: With dead ends: 11 [2019-11-23 22:11:22,209 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:22,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:11:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:22,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-23 22:11:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:22,210 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:22,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:11:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:22,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:22,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:22,329 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:22,329 INFO L447 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2019-11-23 22:11:22,329 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:11:22,330 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:22,330 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:22,330 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:22,330 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= 9 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 6)) (<= ULTIMATE.start_main_~i~0 3)) (and (< 5 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6)) (and (<= ULTIMATE.start_main_~i~0 1) (<= 10 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 9))) (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 3)) (<= ULTIMATE.start_main_~i~0 5) (<= 8 ULTIMATE.start_main_~j~0)) (and (<= 7 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 7))) [2019-11-23 22:11:22,330 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2019-11-23 22:11:22,331 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:22,331 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-23 22:11:22,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:22 BoogieIcfgContainer [2019-11-23 22:11:22,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:22,354 INFO L168 Benchmark]: Toolchain (without parser) took 2979.98 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 103.9 MB in the beginning and 168.1 MB in the end (delta: -64.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,356 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.44 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 138.9 MB. Free memory was 94.4 MB in the beginning and 92.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,358 INFO L168 Benchmark]: Boogie Preprocessor took 93.81 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 180.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,359 INFO L168 Benchmark]: RCFGBuilder took 202.43 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 170.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,359 INFO L168 Benchmark]: TraceAbstraction took 2363.07 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 170.5 MB in the beginning and 168.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:22,363 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.44 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 138.9 MB. Free memory was 94.4 MB in the beginning and 92.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.81 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 180.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 202.43 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 170.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2363.07 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 170.5 MB in the beginning and 168.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: (((((9 <= j && j <= i + 6) && i <= 3) || ((5 < j && j + 3 <= i) && j <= 6)) || ((i <= 1 && 10 <= j) && j <= i + 9)) || ((j <= i + 3 && i <= 5) && 8 <= j)) || ((7 <= j && j <= i) && i <= 7) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 28 SDtfs, 1 SDslu, 44 SDs, 0 SdLazy, 104 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 1785 SizeOfPredicates, 9 NumberOfNonLiveVariables, 106 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 15/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...