/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:53,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:53,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:53,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:53,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:53,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:53,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:53,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:53,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:53,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:53,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:53,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:53,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:53,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:53,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:53,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:53,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:53,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:53,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:53,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:53,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:53,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:53,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:53,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:53,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:53,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:53,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:53,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:53,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:32:53,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:53,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:53,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:53,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:53,416 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:53,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:53,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:53,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:53,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:53,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:53,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:53,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:53,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:53,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:53,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:53,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:53,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:53,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:53,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:53,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:53,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:53,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:53,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:53,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:53,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:53,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:53,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:53,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:53,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:53,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:53,768 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:53,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:53,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:53,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:53,795 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:53,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-07-07 11:32:53,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa8c8de3/0c881440229a48dfbfc926867b58fba2/FLAGe3753021e [2020-07-07 11:32:54,329 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:54,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2020-07-07 11:32:54,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa8c8de3/0c881440229a48dfbfc926867b58fba2/FLAGe3753021e [2020-07-07 11:32:54,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa8c8de3/0c881440229a48dfbfc926867b58fba2 [2020-07-07 11:32:54,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:54,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:54,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:54,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:54,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:54,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f8393f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54, skipping insertion in model container [2020-07-07 11:32:54,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:54,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:54,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:54,912 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:54,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:54,946 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:54,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54 WrapperNode [2020-07-07 11:32:54,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:54,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:54,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:54,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:54,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:54,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... [2020-07-07 11:32:55,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:55,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:55,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:55,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:55,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:55,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-07 11:32:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:55,333 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:55,333 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:32:55,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:55 BoogieIcfgContainer [2020-07-07 11:32:55,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:55,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:55,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:55,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:54" (1/3) ... [2020-07-07 11:32:55,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113b6696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:55, skipping insertion in model container [2020-07-07 11:32:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:54" (2/3) ... [2020-07-07 11:32:55,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113b6696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:55, skipping insertion in model container [2020-07-07 11:32:55,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:55" (3/3) ... [2020-07-07 11:32:55,348 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-07-07 11:32:55,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:55,368 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:55,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:55,413 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:55,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:55,414 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:55,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:55,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:55,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:55,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:55,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-07 11:32:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:32:55,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:55,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:55,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2020-07-07 11:32:55,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:55,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138131612] [2020-07-07 11:32:55,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:55,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138131612] [2020-07-07 11:32:55,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:55,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 11:32:55,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709059944] [2020-07-07 11:32:55,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 11:32:55,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:55,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 11:32:55,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:32:55,677 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-07 11:32:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:55,703 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-07-07 11:32:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 11:32:55,705 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-07 11:32:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:55,715 INFO L225 Difference]: With dead ends: 30 [2020-07-07 11:32:55,715 INFO L226 Difference]: Without dead ends: 13 [2020-07-07 11:32:55,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:32:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-07 11:32:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-07 11:32:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-07 11:32:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-07 11:32:55,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-07 11:32:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:55,765 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-07 11:32:55,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 11:32:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-07 11:32:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:32:55,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:55,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:55,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:55,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:55,768 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2020-07-07 11:32:55,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:55,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824466385] [2020-07-07 11:32:55,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:55,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824466385] [2020-07-07 11:32:55,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:55,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:32:55,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759451565] [2020-07-07 11:32:55,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:32:55,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:55,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:32:55,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:55,878 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-07 11:32:55,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:55,940 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-07 11:32:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:32:55,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-07 11:32:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:55,942 INFO L225 Difference]: With dead ends: 21 [2020-07-07 11:32:55,942 INFO L226 Difference]: Without dead ends: 16 [2020-07-07 11:32:55,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:32:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-07 11:32:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-07 11:32:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-07 11:32:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-07 11:32:55,950 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-07-07 11:32:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:55,950 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-07 11:32:55,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:32:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-07 11:32:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:32:55,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:55,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:55,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:32:55,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:55,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2020-07-07 11:32:55,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:55,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175923823] [2020-07-07 11:32:55,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:56,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175923823] [2020-07-07 11:32:56,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289366225] [2020-07-07 11:32:56,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:56,244 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:32:56,251 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:56,400 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:32:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:56,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:56,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-07-07 11:32:56,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618208817] [2020-07-07 11:32:56,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 11:32:56,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 11:32:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-07-07 11:32:56,454 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 16 states. [2020-07-07 11:32:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:56,712 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-07 11:32:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 11:32:56,714 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-07-07 11:32:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:56,715 INFO L225 Difference]: With dead ends: 37 [2020-07-07 11:32:56,715 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 11:32:56,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-07-07 11:32:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 11:32:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-07-07 11:32:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-07 11:32:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-07 11:32:56,723 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-07-07 11:32:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:56,724 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-07 11:32:56,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 11:32:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-07 11:32:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:32:56,725 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:56,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:56,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:32:56,940 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:56,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 1 times [2020-07-07 11:32:56,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:56,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962718060] [2020-07-07 11:32:56,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:56,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962718060] [2020-07-07 11:32:56,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325003829] [2020-07-07 11:32:56,996 INFO L94 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) [2020-07-07 11:32:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:57,025 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:32:57,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:57,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:57,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-07 11:32:57,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790077051] [2020-07-07 11:32:57,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:32:57,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:57,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:32:57,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:57,043 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-07-07 11:32:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:57,084 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-07 11:32:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:32:57,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-07 11:32:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:57,086 INFO L225 Difference]: With dead ends: 30 [2020-07-07 11:32:57,086 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 11:32:57,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 11:32:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-07-07 11:32:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 11:32:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-07 11:32:57,093 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-07-07 11:32:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:57,093 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-07 11:32:57,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:32:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-07 11:32:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:32:57,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:57,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:57,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:57,296 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 2 times [2020-07-07 11:32:57,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:57,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609685948] [2020-07-07 11:32:57,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-07 11:32:57,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609685948] [2020-07-07 11:32:57,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717511851] [2020-07-07 11:32:57,587 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:57,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:32:57,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:32:57,623 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-07 11:32:57,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:57,862 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:32:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:57,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:57,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2020-07-07 11:32:57,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434689709] [2020-07-07 11:32:57,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 11:32:57,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:57,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 11:32:57,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:32:57,923 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 21 states. [2020-07-07 11:32:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:58,552 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-07 11:32:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 11:32:58,553 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2020-07-07 11:32:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:58,554 INFO L225 Difference]: With dead ends: 40 [2020-07-07 11:32:58,554 INFO L226 Difference]: Without dead ends: 28 [2020-07-07 11:32:58,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 11:32:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-07 11:32:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-07 11:32:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:32:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-07 11:32:58,568 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-07-07 11:32:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:58,568 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-07 11:32:58,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 11:32:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-07 11:32:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:32:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:58,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:58,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:58,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:58,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1753373675, now seen corresponding path program 2 times [2020-07-07 11:32:58,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:58,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272354916] [2020-07-07 11:32:58,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:58,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272354916] [2020-07-07 11:32:58,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600186799] [2020-07-07 11:32:58,839 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-07-07 11:32:58,867 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:32:58,867 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:58,868 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:32:58,870 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:58,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:58,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-07 11:32:58,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393182351] [2020-07-07 11:32:58,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:32:58,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:58,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:32:58,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:32:58,881 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-07-07 11:32:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:58,931 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-07 11:32:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:32:58,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-07-07 11:32:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:58,934 INFO L225 Difference]: With dead ends: 39 [2020-07-07 11:32:58,935 INFO L226 Difference]: Without dead ends: 31 [2020-07-07 11:32:58,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:32:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-07 11:32:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-07-07 11:32:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 11:32:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-07-07 11:32:58,947 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2020-07-07 11:32:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:58,947 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-07-07 11:32:58,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:32:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-07-07 11:32:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 11:32:58,950 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:58,950 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:59,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:59,151 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1094958777, now seen corresponding path program 3 times [2020-07-07 11:32:59,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:59,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863456024] [2020-07-07 11:32:59,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:59,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863456024] [2020-07-07 11:32:59,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586345062] [2020-07-07 11:32:59,219 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-07 11:32:59,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-07-07 11:32:59,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:32:59,254 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:32:59,255 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:59,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:59,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-07-07 11:32:59,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796080129] [2020-07-07 11:32:59,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:32:59,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:59,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:32:59,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:32:59,267 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-07-07 11:32:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:59,323 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-07-07 11:32:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:32:59,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-07-07 11:32:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:59,326 INFO L225 Difference]: With dead ends: 42 [2020-07-07 11:32:59,327 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 11:32:59,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:32:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 11:32:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-07-07 11:32:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-07 11:32:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-07-07 11:32:59,334 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2020-07-07 11:32:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:59,335 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-07-07 11:32:59,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:32:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-07-07 11:32:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:32:59,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:59,336 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:59,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 11:32:59,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:59,548 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 4 times [2020-07-07 11:32:59,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:59,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081367330] [2020-07-07 11:32:59,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:59,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081367330] [2020-07-07 11:32:59,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674488853] [2020-07-07 11:32:59,644 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-07 11:32:59,673 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:32:59,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:32:59,675 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:32:59,677 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:59,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:59,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-07-07 11:32:59,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11066207] [2020-07-07 11:32:59,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:32:59,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:32:59,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:32:59,690 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 9 states. [2020-07-07 11:32:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:59,746 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-07 11:32:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:32:59,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-07-07 11:32:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:59,747 INFO L225 Difference]: With dead ends: 45 [2020-07-07 11:32:59,748 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 11:32:59,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:32:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 11:32:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-07-07 11:32:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-07 11:32:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-07-07 11:32:59,754 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2020-07-07 11:32:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:59,755 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-07-07 11:32:59,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:32:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-07-07 11:32:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-07 11:32:59,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:59,757 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:59,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:59,971 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:59,972 INFO L82 PathProgramCache]: Analyzing trace with hash 144867641, now seen corresponding path program 5 times [2020-07-07 11:32:59,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:59,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027751071] [2020-07-07 11:32:59,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:00,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027751071] [2020-07-07 11:33:00,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876118147] [2020-07-07 11:33:00,084 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-07-07 11:33:00,116 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-07-07 11:33:00,116 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:00,117 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-07 11:33:00,121 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:00,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:00,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-07-07 11:33:00,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129143465] [2020-07-07 11:33:00,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:33:00,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:00,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:33:00,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:00,136 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 10 states. [2020-07-07 11:33:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:00,206 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-07 11:33:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:33:00,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-07 11:33:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:00,208 INFO L225 Difference]: With dead ends: 48 [2020-07-07 11:33:00,208 INFO L226 Difference]: Without dead ends: 40 [2020-07-07 11:33:00,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-07 11:33:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-07-07 11:33:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-07 11:33:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-07-07 11:33:00,215 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2020-07-07 11:33:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:00,215 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-07-07 11:33:00,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:33:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-07-07 11:33:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 11:33:00,216 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:00,216 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:00,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:00,429 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash -232382699, now seen corresponding path program 6 times [2020-07-07 11:33:00,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:00,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200416891] [2020-07-07 11:33:00,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:00,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200416891] [2020-07-07 11:33:00,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475570203] [2020-07-07 11:33:00,526 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-07-07 11:33:00,564 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-07-07 11:33:00,565 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:00,566 INFO L264 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:33:00,568 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:00,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:00,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-07-07 11:33:00,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128140270] [2020-07-07 11:33:00,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 11:33:00,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:00,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 11:33:00,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:33:00,581 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-07-07 11:33:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:00,649 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-07-07 11:33:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 11:33:00,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-07-07 11:33:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:00,651 INFO L225 Difference]: With dead ends: 51 [2020-07-07 11:33:00,652 INFO L226 Difference]: Without dead ends: 43 [2020-07-07 11:33:00,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:33:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-07 11:33:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-07 11:33:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-07 11:33:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-07-07 11:33:00,660 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2020-07-07 11:33:00,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:00,661 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-07-07 11:33:00,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 11:33:00,661 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-07-07 11:33:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 11:33:00,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:00,662 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:00,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 11:33:00,864 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:00,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 7 times [2020-07-07 11:33:00,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:00,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731191812] [2020-07-07 11:33:00,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:33:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:33:00,991 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:33:00,992 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:33:00,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:33:01,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:01 BoogieIcfgContainer [2020-07-07 11:33:01,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:01,048 INFO L168 Benchmark]: Toolchain (without parser) took 6345.62 ms. Allocated memory was 142.6 MB in the beginning and 246.4 MB in the end (delta: 103.8 MB). Free memory was 107.1 MB in the beginning and 130.1 MB in the end (delta: -23.0 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:01,050 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:01,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.14 ms. Allocated memory is still 142.6 MB. Free memory was 106.9 MB in the beginning and 97.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:01,052 INFO L168 Benchmark]: Boogie Preprocessor took 118.25 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 97.5 MB in the beginning and 185.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:01,058 INFO L168 Benchmark]: RCFGBuilder took 271.69 ms. Allocated memory is still 205.0 MB. Free memory was 185.2 MB in the beginning and 172.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:01,064 INFO L168 Benchmark]: TraceAbstraction took 5705.33 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 171.6 MB in the beginning and 130.1 MB in the end (delta: 41.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:01,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.14 ms. Allocated memory is still 142.6 MB. Free memory was 106.9 MB in the beginning and 97.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.25 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 97.5 MB in the beginning and 185.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.69 ms. Allocated memory is still 205.0 MB. Free memory was 185.2 MB in the beginning and 172.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5705.33 ms. Allocated memory was 205.0 MB in the beginning and 246.4 MB in the end (delta: 41.4 MB). Free memory was 171.6 MB in the beginning and 130.1 MB in the end (delta: 41.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=10, n=0] [L13] COND TRUE i<=n VAL [i=1, n=0, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=1, n=10, n=2] [L13] i++ VAL [i=2, n=2, n=10] [L13] COND TRUE i<=n VAL [i=2, n=2, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=2, n=4, n=10] [L13] i++ VAL [i=3, n=4, n=10] [L13] COND TRUE i<=n VAL [i=3, n=10, n=4] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=10, n=6] [L13] i++ VAL [i=4, n=6, n=10] [L13] COND TRUE i<=n VAL [i=4, n=10, n=6] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=8, n=10] [L13] i++ VAL [i=5, n=8, n=10] [L13] COND TRUE i<=n VAL [i=5, n=8, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=5, n=10, n=10] [L13] i++ VAL [i=6, n=10, n=10] [L13] COND TRUE i<=n VAL [i=6, n=10, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=6, n=10, n=12] [L13] i++ VAL [i=7, n=12, n=10] [L13] COND TRUE i<=n VAL [i=7, n=10, n=12] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=7, n=14, n=10] [L13] i++ VAL [i=8, n=10, n=14] [L13] COND TRUE i<=n VAL [i=8, n=14, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=10, n=16] [L13] i++ VAL [i=9, n=16, n=10] [L13] COND TRUE i<=n VAL [i=9, n=16, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=10, n=18] [L13] i++ VAL [i=10, n=10, n=18] [L13] COND TRUE i<=n VAL [i=10, n=18, n=10] [L14] COND FALSE !(i<10) VAL [i=10, n=10, n=18] [L13] i++ VAL [i=11, n=18, n=10] [L13] COND FALSE !(i<=n) VAL [i=11, n=10, n=18] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 61 SDslu, 439 SDs, 0 SdLazy, 543 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 29688 SizeOfPredicates, 12 NumberOfNonLiveVariables, 448 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 145/780 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 incorrect! Received shutdown request...