/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:29:05,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:29:05,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:29:05,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:29:05,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:29:05,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:29:05,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:29:05,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:29:05,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:29:05,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:29:05,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:29:05,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:29:05,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:29:05,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:29:05,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:29:05,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:29:05,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:29:05,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:29:05,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:29:05,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:29:05,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:29:05,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:29:05,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:29:05,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:29:05,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:29:05,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:29:05,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:29:05,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:29:05,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:29:05,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:29:05,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:29:05,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:29:05,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:29:05,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:29:05,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:29:05,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:29:05,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:29:05,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:29:05,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:29:05,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:29:05,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:29:05,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:29:05,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:29:05,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:29:05,467 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:29:05,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:29:05,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:29:05,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:29:05,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:29:05,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:29:05,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:29:05,469 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:29:05,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:29:06,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:29:06,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:29:06,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:29:06,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:29:06,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-04 16:29:06,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1a2cdce/6a6ff4eeb9bf469d9f80e2a5d5888fd3/FLAG13136fabc [2020-09-04 16:29:06,814 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:29:06,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-04 16:29:06,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1a2cdce/6a6ff4eeb9bf469d9f80e2a5d5888fd3/FLAG13136fabc [2020-09-04 16:29:07,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1a2cdce/6a6ff4eeb9bf469d9f80e2a5d5888fd3 [2020-09-04 16:29:07,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:29:07,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:29:07,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:29:07,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:29:07,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:29:07,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a509ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07, skipping insertion in model container [2020-09-04 16:29:07,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:29:07,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:29:07,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:29:07,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:29:07,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:29:07,501 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:29:07,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07 WrapperNode [2020-09-04 16:29:07,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:29:07,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:29:07,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:29:07,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:29:07,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... [2020-09-04 16:29:07,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:29:07,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:29:07,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:29:07,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:29:07,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:29:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:29:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:29:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 16:29:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:29:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:29:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:29:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 16:29:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:29:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:29:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:29:08,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:29:08,017 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:29:08,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:29:08 BoogieIcfgContainer [2020-09-04 16:29:08,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:29:08,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:29:08,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:29:08,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:29:08,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:29:07" (1/3) ... [2020-09-04 16:29:08,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:29:08, skipping insertion in model container [2020-09-04 16:29:08,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:29:07" (2/3) ... [2020-09-04 16:29:08,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cd13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:29:08, skipping insertion in model container [2020-09-04 16:29:08,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:29:08" (3/3) ... [2020-09-04 16:29:08,036 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-09-04 16:29:08,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:29:08,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:29:08,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:29:08,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:29:08,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:29:08,126 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:29:08,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:29:08,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:29:08,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:29:08,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:29:08,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:29:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-04 16:29:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 16:29:08,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:08,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:08,169 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-04 16:29:08,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:08,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590808964] [2020-09-04 16:29:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:08,269 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:08,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:29:08,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590808964] [2020-09-04 16:29:08,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:08,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:29:08,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945457605] [2020-09-04 16:29:08,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:29:08,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:08,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:29:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:29:08,550 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-04 16:29:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:08,766 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-04 16:29:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:29:08,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-04 16:29:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:08,785 INFO L225 Difference]: With dead ends: 44 [2020-09-04 16:29:08,786 INFO L226 Difference]: Without dead ends: 28 [2020-09-04 16:29:08,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:29:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-04 16:29:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-04 16:29:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 16:29:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-04 16:29:08,853 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-04 16:29:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:08,854 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-04 16:29:08,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:29:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-04 16:29:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 16:29:08,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:08,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:08,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:29:08,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:08,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-04 16:29:08,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:08,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962202456] [2020-09-04 16:29:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:08,865 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:08,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:29:09,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962202456] [2020-09-04 16:29:09,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:09,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:29:09,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108178962] [2020-09-04 16:29:09,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:29:09,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:09,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:29:09,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:29:09,020 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-09-04 16:29:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:09,088 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-04 16:29:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:29:09,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-04 16:29:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:09,091 INFO L225 Difference]: With dead ends: 49 [2020-09-04 16:29:09,091 INFO L226 Difference]: Without dead ends: 35 [2020-09-04 16:29:09,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:29:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-04 16:29:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-09-04 16:29:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 16:29:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-04 16:29:09,108 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2020-09-04 16:29:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:09,109 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-04 16:29:09,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:29:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-04 16:29:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 16:29:09,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:09,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:09,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:29:09,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:09,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-04 16:29:09,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:09,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970673432] [2020-09-04 16:29:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:09,116 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:29:09,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970673432] [2020-09-04 16:29:09,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:09,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:29:09,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670653517] [2020-09-04 16:29:09,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:29:09,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:09,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:29:09,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:29:09,363 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-09-04 16:29:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:09,527 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-04 16:29:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:29:09,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-04 16:29:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:09,531 INFO L225 Difference]: With dead ends: 41 [2020-09-04 16:29:09,531 INFO L226 Difference]: Without dead ends: 35 [2020-09-04 16:29:09,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:29:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-04 16:29:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-04 16:29:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 16:29:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-04 16:29:09,545 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-09-04 16:29:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:09,546 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-04 16:29:09,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:29:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-04 16:29:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 16:29:09,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:09,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:09,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:29:09,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times [2020-09-04 16:29:09,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:09,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819296094] [2020-09-04 16:29:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:09,555 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:29:09,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819296094] [2020-09-04 16:29:09,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:09,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:29:09,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972840803] [2020-09-04 16:29:09,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:29:09,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:09,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:29:09,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:29:09,779 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2020-09-04 16:29:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:09,832 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-09-04 16:29:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:29:09,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-04 16:29:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:09,835 INFO L225 Difference]: With dead ends: 43 [2020-09-04 16:29:09,835 INFO L226 Difference]: Without dead ends: 37 [2020-09-04 16:29:09,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:29:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-04 16:29:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-04 16:29:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 16:29:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-04 16:29:09,849 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 38 [2020-09-04 16:29:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:09,849 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-04 16:29:09,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:29:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-04 16:29:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 16:29:09,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:09,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:09,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:29:09,853 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-09-04 16:29:09,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:09,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484781564] [2020-09-04 16:29:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:09,857 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:29:10,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484781564] [2020-09-04 16:29:10,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:10,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:29:10,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711388749] [2020-09-04 16:29:10,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:29:10,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:29:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:29:10,104 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 11 states. [2020-09-04 16:29:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:10,240 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-09-04 16:29:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 16:29:10,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-04 16:29:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:10,243 INFO L225 Difference]: With dead ends: 64 [2020-09-04 16:29:10,243 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 16:29:10,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:29:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 16:29:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-04 16:29:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 16:29:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-04 16:29:10,255 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 38 [2020-09-04 16:29:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:10,256 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-04 16:29:10,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:29:10,256 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-04 16:29:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 16:29:10,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:10,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:10,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:29:10,258 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1045014785, now seen corresponding path program 3 times [2020-09-04 16:29:10,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:10,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875915709] [2020-09-04 16:29:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:10,262 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 16:29:10,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875915709] [2020-09-04 16:29:10,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:10,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 16:29:10,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873730399] [2020-09-04 16:29:10,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 16:29:10,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 16:29:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:29:10,636 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 14 states. [2020-09-04 16:29:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:10,833 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-09-04 16:29:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 16:29:10,833 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-09-04 16:29:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:10,835 INFO L225 Difference]: With dead ends: 71 [2020-09-04 16:29:10,836 INFO L226 Difference]: Without dead ends: 51 [2020-09-04 16:29:10,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-09-04 16:29:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-04 16:29:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-04 16:29:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-04 16:29:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-04 16:29:10,849 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 48 [2020-09-04 16:29:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:10,850 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-04 16:29:10,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 16:29:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-04 16:29:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 16:29:10,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:10,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:10,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:29:10,853 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash 485800496, now seen corresponding path program 4 times [2020-09-04 16:29:10,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:10,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736784356] [2020-09-04 16:29:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:10,856 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 16:29:11,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736784356] [2020-09-04 16:29:11,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:11,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:29:11,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801962469] [2020-09-04 16:29:11,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:29:11,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:11,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:29:11,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:29:11,397 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 17 states. [2020-09-04 16:29:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:11,678 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2020-09-04 16:29:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 16:29:11,679 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-04 16:29:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:11,681 INFO L225 Difference]: With dead ends: 78 [2020-09-04 16:29:11,681 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 16:29:11,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-09-04 16:29:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 16:29:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-09-04 16:29:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 16:29:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-09-04 16:29:11,698 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 58 [2020-09-04 16:29:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:11,699 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-09-04 16:29:11,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:29:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-09-04 16:29:11,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-04 16:29:11,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:29:11,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:29:11,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:29:11,702 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:29:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:29:11,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1938626529, now seen corresponding path program 5 times [2020-09-04 16:29:11,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:29:11,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677040206] [2020-09-04 16:29:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:29:11,706 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:29:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:29:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:29:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:12,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:29:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:29:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 16:29:12,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677040206] [2020-09-04 16:29:12,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:29:12,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 16:29:12,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555947170] [2020-09-04 16:29:12,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 16:29:12,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:29:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 16:29:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-09-04 16:29:12,150 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 20 states. [2020-09-04 16:29:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:29:12,442 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-09-04 16:29:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 16:29:12,442 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-09-04 16:29:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:29:12,443 INFO L225 Difference]: With dead ends: 76 [2020-09-04 16:29:12,444 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:29:12,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2020-09-04 16:29:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:29:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:29:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:29:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:29:12,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2020-09-04 16:29:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:29:12,448 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:29:12,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 16:29:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:29:12,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:29:12,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:29:12,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:29:12,777 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:29:12,778 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:29:12,778 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 16:29:12,778 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:29:12,778 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:29:12,778 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 16:29:12,779 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2020-09-04 16:29:12,779 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-04 16:29:12,779 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: true [2020-09-04 16:29:12,779 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-09-04 16:29:12,780 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (<= main_~result~0 5) [2020-09-04 16:29:12,780 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-04 16:29:12,780 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-04 16:29:12,780 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (<= |main_#t~ret2| 5) [2020-09-04 16:29:12,780 INFO L271 CegarLoopResult]: At program point L14-2(lines 11 17) the Hoare annotation is: true [2020-09-04 16:29:12,781 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-09-04 16:29:12,781 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (<= |main_#t~ret2| 5) [2020-09-04 16:29:12,781 INFO L264 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (and (<= |main_#t~ret2| 5) (<= main_~result~0 5)) [2020-09-04 16:29:12,781 INFO L264 CegarLoopResult]: At program point idFINAL(lines 4 9) the Hoare annotation is: (<= |id_#res| 5) [2020-09-04 16:29:12,781 INFO L264 CegarLoopResult]: At program point idEXIT(lines 4 9) the Hoare annotation is: (<= |id_#res| 5) [2020-09-04 16:29:12,782 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-04 16:29:12,782 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (<= id_~ret~0 5) [2020-09-04 16:29:12,782 INFO L271 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: true [2020-09-04 16:29:12,782 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-04 16:29:12,782 INFO L271 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: true [2020-09-04 16:29:12,783 INFO L271 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: true [2020-09-04 16:29:12,783 INFO L271 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: true [2020-09-04 16:29:12,783 INFO L271 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: true [2020-09-04 16:29:12,783 INFO L271 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: true [2020-09-04 16:29:12,783 INFO L271 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: true [2020-09-04 16:29:12,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:29:12 BoogieIcfgContainer [2020-09-04 16:29:12,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:29:12,819 INFO L168 Benchmark]: Toolchain (without parser) took 5664.86 ms. Allocated memory was 137.4 MB in the beginning and 251.1 MB in the end (delta: 113.8 MB). Free memory was 102.1 MB in the beginning and 180.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:12,820 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 137.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-04 16:29:12,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.24 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 92.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:12,822 INFO L168 Benchmark]: Boogie Preprocessor took 44.80 ms. Allocated memory is still 137.4 MB. Free memory was 92.6 MB in the beginning and 91.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:12,823 INFO L168 Benchmark]: RCFGBuilder took 474.03 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.9 MB in the beginning and 168.8 MB in the end (delta: -77.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:12,824 INFO L168 Benchmark]: TraceAbstraction took 4789.69 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 167.7 MB in the beginning and 180.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:29:12,829 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 137.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.24 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 92.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.80 ms. Allocated memory is still 137.4 MB. Free memory was 92.6 MB in the beginning and 91.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.03 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.9 MB in the beginning and 168.8 MB in the end (delta: -77.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4789.69 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 167.7 MB in the beginning and 180.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for id Derived contract for procedure id: \result <= 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 76 SDslu, 1103 SDs, 0 SdLazy, 398 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 42 PreInvPairs, 178 NumberOfFragments, 48 HoareAnnotationTreeSize, 42 FomulaSimplifications, 594 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 30 FomulaSimplificationsInter, 227 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...