/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:03:02,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:03:02,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:03:02,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:03:02,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:03:02,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:03:02,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:03:02,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:03:02,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:03:02,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:03:02,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:03:02,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:03:02,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:03:02,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:03:02,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:03:02,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:03:02,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:03:02,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:03:02,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:03:02,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:03:02,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:03:02,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:03:02,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:03:02,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:03:02,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:03:02,696 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:03:02,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:03:02,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:03:02,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:03:02,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:03:02,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:03:02,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:03:02,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:03:02,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:03:02,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:03:02,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:03:02,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:03:02,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:03:02,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:03:02,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:03:02,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:03:02,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:03:02,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:03:02,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:03:02,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:03:02,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:03:02,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:03:03,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:03:03,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:03:03,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:03:03,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:03:03,170 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:03:03,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2020-12-22 07:03:03,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4014db41/ce5b7a4af9dd477fbe6ef1f44d3fc959/FLAGd1aeec19f [2020-12-22 07:03:03,970 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:03:03,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2020-12-22 07:03:03,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4014db41/ce5b7a4af9dd477fbe6ef1f44d3fc959/FLAGd1aeec19f [2020-12-22 07:03:04,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4014db41/ce5b7a4af9dd477fbe6ef1f44d3fc959 [2020-12-22 07:03:04,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:03:04,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:03:04,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:03:04,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:03:04,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:03:04,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78dbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04, skipping insertion in model container [2020-12-22 07:03:04,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:03:04,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:03:04,600 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2020-12-22 07:03:04,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:03:04,616 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:03:04,635 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2020-12-22 07:03:04,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:03:04,654 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:03:04,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04 WrapperNode [2020-12-22 07:03:04,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:03:04,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:03:04,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:03:04,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:03:04,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:03:04,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:03:04,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:03:04,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:03:04,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... [2020-12-22 07:03:04,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:03:04,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:03:04,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:03:04,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:03:04,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:03:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:03:04,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:03:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:03:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:03:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-12-22 07:03:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-12-22 07:03:05,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:03:05,147 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 07:03:05,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:05 BoogieIcfgContainer [2020-12-22 07:03:05,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:03:05,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:03:05,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:03:05,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:03:05,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:03:04" (1/3) ... [2020-12-22 07:03:05,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd49921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:03:05, skipping insertion in model container [2020-12-22 07:03:05,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:04" (2/3) ... [2020-12-22 07:03:05,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd49921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:03:05, skipping insertion in model container [2020-12-22 07:03:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:05" (3/3) ... [2020-12-22 07:03:05,168 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-12-22 07:03:05,193 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:03:05,208 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:03:05,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:03:05,351 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:03:05,351 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:03:05,351 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:03:05,352 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:03:05,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:03:05,352 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:03:05,352 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:03:05,352 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:03:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-22 07:03:05,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 07:03:05,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:05,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:05,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:05,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2020-12-22 07:03:05,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:05,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774386544] [2020-12-22 07:03:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:03:05,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774386544] [2020-12-22 07:03:05,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:03:05,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:03:05,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931816583] [2020-12-22 07:03:05,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:03:05,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:05,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:03:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:05,858 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-12-22 07:03:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:06,010 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-12-22 07:03:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:03:06,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 07:03:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:06,025 INFO L225 Difference]: With dead ends: 30 [2020-12-22 07:03:06,026 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 07:03:06,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:03:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 07:03:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 07:03:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 07:03:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-22 07:03:06,076 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-12-22 07:03:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:06,076 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-22 07:03:06,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:03:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-22 07:03:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 07:03:06,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:06,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:06,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:03:06,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:06,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2020-12-22 07:03:06,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:06,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856142399] [2020-12-22 07:03:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:03:06,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856142399] [2020-12-22 07:03:06,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:03:06,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:03:06,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533325618] [2020-12-22 07:03:06,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:03:06,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:06,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:03:06,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:06,147 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-12-22 07:03:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:06,197 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-12-22 07:03:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:03:06,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 07:03:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:06,199 INFO L225 Difference]: With dead ends: 24 [2020-12-22 07:03:06,200 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 07:03:06,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:03:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 07:03:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-12-22 07:03:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 07:03:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-22 07:03:06,209 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2020-12-22 07:03:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:06,209 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-22 07:03:06,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:03:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-22 07:03:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 07:03:06,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:06,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:06,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:03:06,211 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:06,212 INFO L82 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2020-12-22 07:03:06,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:06,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67226512] [2020-12-22 07:03:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-12-22 07:03:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:03:06,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67226512] [2020-12-22 07:03:06,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370043098] [2020-12-22 07:03:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:03:06,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:03:06,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:06,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 07:03:06,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949107272] [2020-12-22 07:03:06,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:03:06,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:06,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:03:06,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:03:06,556 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 9 states. [2020-12-22 07:03:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:06,683 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-12-22 07:03:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 07:03:06,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 07:03:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:06,685 INFO L225 Difference]: With dead ends: 35 [2020-12-22 07:03:06,685 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 07:03:06,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:03:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 07:03:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 07:03:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 07:03:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-22 07:03:06,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2020-12-22 07:03:06,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:06,695 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-22 07:03:06,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:03:06,695 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-22 07:03:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 07:03:06,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:06,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:06,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 07:03:06,912 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2020-12-22 07:03:06,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:06,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463418476] [2020-12-22 07:03:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:03:07,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463418476] [2020-12-22 07:03:07,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508840848] [2020-12-22 07:03:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:03:07,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:03:07,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:07,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-12-22 07:03:07,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804915909] [2020-12-22 07:03:07,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:03:07,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:07,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:03:07,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:03:07,254 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 8 states. [2020-12-22 07:03:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:07,408 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-12-22 07:03:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:03:07,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-22 07:03:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:07,417 INFO L225 Difference]: With dead ends: 38 [2020-12-22 07:03:07,418 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 07:03:07,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:03:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 07:03:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 07:03:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 07:03:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-12-22 07:03:07,449 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2020-12-22 07:03:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:07,450 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-12-22 07:03:07,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:03:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-12-22 07:03:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 07:03:07,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:07,453 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:07,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:07,667 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:07,671 INFO L82 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2020-12-22 07:03:07,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:07,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597466406] [2020-12-22 07:03:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 07:03:07,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597466406] [2020-12-22 07:03:07,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046265037] [2020-12-22 07:03:07,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:07,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 07:03:07,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 07:03:07,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 07:03:07,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 07:03:08,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:08,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-22 07:03:08,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557382116] [2020-12-22 07:03:08,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:03:08,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:08,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:03:08,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:03:08,122 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 13 states. [2020-12-22 07:03:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:08,508 INFO L93 Difference]: Finished difference Result 69 states and 106 transitions. [2020-12-22 07:03:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:03:08,509 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-12-22 07:03:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:08,511 INFO L225 Difference]: With dead ends: 69 [2020-12-22 07:03:08,511 INFO L226 Difference]: Without dead ends: 38 [2020-12-22 07:03:08,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:03:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-22 07:03:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-22 07:03:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 07:03:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-12-22 07:03:08,522 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2020-12-22 07:03:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:08,522 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-12-22 07:03:08,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:03:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-12-22 07:03:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:03:08,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:08,526 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:08,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:08,740 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:08,741 INFO L82 PathProgramCache]: Analyzing trace with hash 366248375, now seen corresponding path program 3 times [2020-12-22 07:03:08,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:08,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553921473] [2020-12-22 07:03:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-22 07:03:09,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553921473] [2020-12-22 07:03:09,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782655799] [2020-12-22 07:03:09,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-12-22 07:03:09,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 07:03:09,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 07:03:09,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 07:03:09,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 89 proven. 32 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-12-22 07:03:09,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:09,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 13 [2020-12-22 07:03:09,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781688590] [2020-12-22 07:03:09,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:03:09,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:03:09,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:03:09,452 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 13 states. [2020-12-22 07:03:09,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:09,691 INFO L93 Difference]: Finished difference Result 94 states and 140 transitions. [2020-12-22 07:03:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 07:03:09,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-12-22 07:03:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:09,697 INFO L225 Difference]: With dead ends: 94 [2020-12-22 07:03:09,698 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 07:03:09,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:03:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 07:03:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-12-22 07:03:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 07:03:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 124 transitions. [2020-12-22 07:03:09,721 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 124 transitions. Word has length 79 [2020-12-22 07:03:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:09,722 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 124 transitions. [2020-12-22 07:03:09,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:03:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 124 transitions. [2020-12-22 07:03:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 07:03:09,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:09,735 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:09,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:09,946 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:09,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1022210831, now seen corresponding path program 4 times [2020-12-22 07:03:09,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:09,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104199080] [2020-12-22 07:03:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-12-22 07:03:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:10,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 403 proven. 706 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2020-12-22 07:03:11,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104199080] [2020-12-22 07:03:11,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124170084] [2020-12-22 07:03:11,030 INFO L93 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:11,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 07:03:11,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 07:03:11,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:03:11,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2020-12-22 07:03:11,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:11,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 22 [2020-12-22 07:03:11,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310959936] [2020-12-22 07:03:11,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 07:03:11,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:11,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 07:03:11,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:03:11,534 INFO L87 Difference]: Start difference. First operand 84 states and 124 transitions. Second operand 22 states. [2020-12-22 07:03:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:12,126 INFO L93 Difference]: Finished difference Result 170 states and 315 transitions. [2020-12-22 07:03:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 07:03:12,127 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 215 [2020-12-22 07:03:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:12,130 INFO L225 Difference]: With dead ends: 170 [2020-12-22 07:03:12,131 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 07:03:12,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=956, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 07:03:12,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 07:03:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2020-12-22 07:03:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 07:03:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2020-12-22 07:03:12,153 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 215 [2020-12-22 07:03:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:12,154 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2020-12-22 07:03:12,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 07:03:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2020-12-22 07:03:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-12-22 07:03:12,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:12,169 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:12,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 07:03:12,371 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:12,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:12,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1099173212, now seen corresponding path program 5 times [2020-12-22 07:03:12,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:12,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017197149] [2020-12-22 07:03:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-12-22 07:03:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-12-22 07:03:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-12-22 07:03:14,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017197149] [2020-12-22 07:03:14,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640614351] [2020-12-22 07:03:14,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:14,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2020-12-22 07:03:14,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 07:03:14,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 167 conjunts are in the unsatisfiable core [2020-12-22 07:03:14,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-12-22 07:03:15,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:15,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2020-12-22 07:03:15,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122251998] [2020-12-22 07:03:15,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 07:03:15,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 07:03:15,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-12-22 07:03:15,923 INFO L87 Difference]: Start difference. First operand 77 states and 106 transitions. Second operand 28 states. [2020-12-22 07:03:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:16,451 INFO L93 Difference]: Finished difference Result 120 states and 186 transitions. [2020-12-22 07:03:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 07:03:16,451 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 283 [2020-12-22 07:03:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:16,456 INFO L225 Difference]: With dead ends: 120 [2020-12-22 07:03:16,456 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 07:03:16,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 401 SyntacticMatches, 22 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-12-22 07:03:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 07:03:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2020-12-22 07:03:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 07:03:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 154 transitions. [2020-12-22 07:03:16,483 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 154 transitions. Word has length 283 [2020-12-22 07:03:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:16,484 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 154 transitions. [2020-12-22 07:03:16,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-22 07:03:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 154 transitions. [2020-12-22 07:03:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-12-22 07:03:16,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:16,496 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 35, 21, 21, 21, 21, 21, 21, 21, 14, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:16,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:16,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:16,711 INFO L82 PathProgramCache]: Analyzing trace with hash 122296983, now seen corresponding path program 6 times [2020-12-22 07:03:16,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:16,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252443197] [2020-12-22 07:03:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-12-22 07:03:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-12-22 07:03:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-12-22 07:03:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-12-22 07:03:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 903 proven. 1158 refuted. 0 times theorem prover too weak. 2986 trivial. 0 not checked. [2020-12-22 07:03:17,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252443197] [2020-12-22 07:03:17,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514320822] [2020-12-22 07:03:17,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:18,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2020-12-22 07:03:18,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 07:03:18,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 07:03:18,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 2214 proven. 16 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2020-12-22 07:03:18,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:18,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8] total 25 [2020-12-22 07:03:18,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262469796] [2020-12-22 07:03:18,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 07:03:18,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:18,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 07:03:18,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-12-22 07:03:18,394 INFO L87 Difference]: Start difference. First operand 100 states and 154 transitions. Second operand 25 states. [2020-12-22 07:03:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:19,136 INFO L93 Difference]: Finished difference Result 209 states and 395 transitions. [2020-12-22 07:03:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 07:03:19,136 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 297 [2020-12-22 07:03:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:19,139 INFO L225 Difference]: With dead ends: 209 [2020-12-22 07:03:19,140 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 07:03:19,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=529, Invalid=1727, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 07:03:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 07:03:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2020-12-22 07:03:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 07:03:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2020-12-22 07:03:19,159 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 297 [2020-12-22 07:03:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:19,160 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2020-12-22 07:03:19,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 07:03:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2020-12-22 07:03:19,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 07:03:19,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:19,166 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:19,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:19,381 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash 584117127, now seen corresponding path program 7 times [2020-12-22 07:03:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:19,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456465993] [2020-12-22 07:03:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-12-22 07:03:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-12-22 07:03:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-12-22 07:03:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-12-22 07:03:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-12-22 07:03:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 07:03:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-12-22 07:03:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-12-22 07:03:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 614 proven. 1112 refuted. 0 times theorem prover too weak. 4313 trivial. 0 not checked. [2020-12-22 07:03:20,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456465993] [2020-12-22 07:03:20,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102115214] [2020-12-22 07:03:20,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:20,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 07:03:20,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 381 proven. 1369 refuted. 0 times theorem prover too weak. 4289 trivial. 0 not checked. [2020-12-22 07:03:20,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:20,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 22 [2020-12-22 07:03:20,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300077687] [2020-12-22 07:03:20,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 07:03:20,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:20,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 07:03:20,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:03:20,969 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand 22 states. [2020-12-22 07:03:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:21,572 INFO L93 Difference]: Finished difference Result 203 states and 335 transitions. [2020-12-22 07:03:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:03:21,573 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 324 [2020-12-22 07:03:21,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:21,573 INFO L225 Difference]: With dead ends: 203 [2020-12-22 07:03:21,573 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 07:03:21,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-12-22 07:03:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 07:03:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 07:03:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 07:03:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 07:03:21,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 324 [2020-12-22 07:03:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:21,577 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 07:03:21,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 07:03:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 07:03:21,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 07:03:21,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 07:03:21,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 07:03:22,121 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 7 [2020-12-22 07:03:22,681 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 42 [2020-12-22 07:03:22,695 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 07:03:22,695 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 07:03:22,695 INFO L185 CegarLoopUtils]: At program point L31(lines 25 32) the Hoare annotation is: (<= 7 ULTIMATE.start_main_~x~0) [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-12-22 07:03:22,696 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 7) (<= 7 ULTIMATE.start_main_~x~0)) [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-12-22 07:03:22,696 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2020-12-22 07:03:22,697 INFO L189 CegarLoopUtils]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2020-12-22 07:03:22,697 INFO L189 CegarLoopUtils]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2020-12-22 07:03:22,697 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (not (<= |fibo_#in~n| 1)) (= fibo_~n |fibo_#in~n|)) [2020-12-22 07:03:22,697 INFO L189 CegarLoopUtils]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-12-22 07:03:22,699 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (< 1 fibo_~n) (or (and (<= |fibo_#t~ret7| 2) (<= fibo_~n 4) (<= 2 |fibo_#t~ret7|) (<= 4 |fibo_#in~n|)) (and (<= 5 fibo_~n) (<= |fibo_#t~ret7| 3) (<= 3 |fibo_#t~ret7|)) (and (<= |fibo_#t~ret7| 1) (<= 1 |fibo_#t~ret7|) (<= |fibo_#in~n| 3)) (<= 6 |fibo_#in~n|)) (let ((.cse0 (= fibo_~n |fibo_#in~n|))) (or (and (<= |fibo_#t~ret7| 8) (<= 8 |fibo_#t~ret7|) .cse0 (<= 7 |fibo_#in~n|)) (and .cse0 (<= 8 |fibo_#in~n|)) (and .cse0 (<= |fibo_#in~n| 5)) (and (<= 5 |fibo_#t~ret7|) (<= |fibo_#t~ret7| 5) (<= |fibo_#in~n| 6) .cse0)))) [2020-12-22 07:03:22,699 INFO L189 CegarLoopUtils]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-12-22 07:03:22,699 INFO L189 CegarLoopUtils]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-12-22 07:03:22,699 INFO L189 CegarLoopUtils]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-12-22 07:03:22,699 INFO L192 CegarLoopUtils]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2020-12-22 07:03:22,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:03:22 BoogieIcfgContainer [2020-12-22 07:03:22,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 07:03:22,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 07:03:22,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 07:03:22,722 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 07:03:22,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:05" (3/4) ... [2020-12-22 07:03:22,726 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 07:03:22,734 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2020-12-22 07:03:22,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 07:03:22,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 07:03:22,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 07:03:22,739 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 07:03:22,805 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/recursive-simple/fibo_7-1.c-witness.graphml [2020-12-22 07:03:22,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 07:03:22,807 INFO L168 Benchmark]: Toolchain (without parser) took 18431.15 ms. Allocated memory was 175.1 MB in the beginning and 488.6 MB in the end (delta: 313.5 MB). Free memory was 150.3 MB in the beginning and 314.9 MB in the end (delta: -164.6 MB). Peak memory consumption was 149.7 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,808 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 175.1 MB. Free memory is still 147.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 07:03:22,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.23 ms. Allocated memory is still 175.1 MB. Free memory was 150.1 MB in the beginning and 140.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 175.1 MB. Free memory was 140.4 MB in the beginning and 139.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,813 INFO L168 Benchmark]: Boogie Preprocessor took 22.16 ms. Allocated memory is still 175.1 MB. Free memory was 139.0 MB in the beginning and 138.2 MB in the end (delta: 894.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,817 INFO L168 Benchmark]: RCFGBuilder took 427.40 ms. Allocated memory is still 175.1 MB. Free memory was 138.2 MB in the beginning and 126.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,818 INFO L168 Benchmark]: TraceAbstraction took 17568.80 ms. Allocated memory was 175.1 MB in the beginning and 488.6 MB in the end (delta: 313.5 MB). Free memory was 126.0 MB in the beginning and 317.5 MB in the end (delta: -191.5 MB). Peak memory consumption was 122.4 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,821 INFO L168 Benchmark]: Witness Printer took 83.91 ms. Allocated memory is still 488.6 MB. Free memory was 317.5 MB in the beginning and 314.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:22,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 175.1 MB. Free memory is still 147.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.23 ms. Allocated memory is still 175.1 MB. Free memory was 150.1 MB in the beginning and 140.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 175.1 MB. Free memory was 140.4 MB in the beginning and 139.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.16 ms. Allocated memory is still 175.1 MB. Free memory was 139.0 MB in the beginning and 138.2 MB in the end (delta: 894.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 427.40 ms. Allocated memory is still 175.1 MB. Free memory was 138.2 MB in the beginning and 126.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17568.80 ms. Allocated memory was 175.1 MB in the beginning and 488.6 MB in the end (delta: 313.5 MB). Free memory was 126.0 MB in the beginning and 317.5 MB in the end (delta: -191.5 MB). Peak memory consumption was 122.4 MB. Max. memory is 8.0 GB. * Witness Printer took 83.91 ms. Allocated memory is still 488.6 MB. Free memory was 317.5 MB in the beginning and 314.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 7 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.4s, OverallIterations: 10, TraceHistogramMax: 47, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 224 SDtfs, 570 SDslu, 1415 SDs, 0 SdLazy, 2178 SolverSat, 651 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1902 GetRequests, 1687 SyntacticMatches, 23 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=9, 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, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 227 PreInvPairs, 322 NumberOfFragments, 101 HoareAnnotationTreeSize, 227 FomulaSimplifications, 353 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1943 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 2585 NumberOfCodeBlocks, 2441 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 2567 ConstructedInterpolants, 0 QuantifiedInterpolants, 1421533 SizeOfPredicates, 35 NumberOfNonLiveVariables, 2709 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 28919/37204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...