/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 0.1.25-267fbe0 [2020-07-17 12:15:52,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:15:52,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:15:52,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:15:52,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:15:52,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:15:52,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:15:52,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:15:52,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:15:52,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:15:52,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:15:52,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:15:52,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:15:52,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:15:52,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:15:52,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:15:52,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:15:52,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:15:52,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:15:52,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:15:52,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:15:52,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:15:52,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:15:52,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:15:52,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:15:52,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:15:52,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:15:52,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:15:52,065 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 [2020-07-17 12:15:52,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:15:52,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:15:52,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:15:52,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:15:52,082 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:15:52,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:15:52,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:15:52,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:15:52,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:15:52,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:15:52,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:15:52,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:15:52,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:15:52,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:15:52,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:15:52,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:15:52,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:15:52,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:15:52,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:15:52,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:15:52,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:15:52,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:15:52,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:15:52,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:15:52,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:15:52,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:15:52,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:15:52,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:15:52,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:15:52,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:15:52,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:15:52,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:15:52,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:15:52,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:15:52,404 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:15:52,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-07-17 12:15:52,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1becd1ba/f4087815b1754a3f92a091b519586afc/FLAG12fdeba48 [2020-07-17 12:15:52,944 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:15:52,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2020-07-17 12:15:52,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1becd1ba/f4087815b1754a3f92a091b519586afc/FLAG12fdeba48 [2020-07-17 12:15:53,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1becd1ba/f4087815b1754a3f92a091b519586afc [2020-07-17 12:15:53,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:15:53,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:15:53,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:53,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:15:53,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:15:53,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f44fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53, skipping insertion in model container [2020-07-17 12:15:53,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:15:53,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:15:53,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:53,593 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:15:53,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:53,623 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:15:53,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53 WrapperNode [2020-07-17 12:15:53,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:53,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:15:53,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:15:53,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:15:53,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (1/1) ... [2020-07-17 12:15:53,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:15:53,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:15:53,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:15:53,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:15:53,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (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 [2020-07-17 12:15:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:15:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:15:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:15:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:15:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:15:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:15:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-17 12:15:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:15:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:15:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:15:54,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:15:54,014 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:15:54,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:54 BoogieIcfgContainer [2020-07-17 12:15:54,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:15:54,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:15:54,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:15:54,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:15:54,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:15:53" (1/3) ... [2020-07-17 12:15:54,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff26d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:54, skipping insertion in model container [2020-07-17 12:15:54,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:53" (2/3) ... [2020-07-17 12:15:54,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff26d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:54, skipping insertion in model container [2020-07-17 12:15:54,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:54" (3/3) ... [2020-07-17 12:15:54,027 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-07-17 12:15:54,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:15:54,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:15:54,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:15:54,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:15:54,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:15:54,101 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:15:54,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:15:54,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:15:54,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:15:54,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:15:54,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:15:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 12:15:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:15:54,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:54,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:54,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:54,145 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2020-07-17 12:15:54,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:54,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426393657] [2020-07-17 12:15:54,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:54,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426393657] [2020-07-17 12:15:54,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:54,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 12:15:54,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266687497] [2020-07-17 12:15:54,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 12:15:54,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:54,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 12:15:54,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 12:15:54,317 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-17 12:15:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:54,335 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-07-17 12:15:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 12:15:54,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 12:15:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:54,346 INFO L225 Difference]: With dead ends: 30 [2020-07-17 12:15:54,346 INFO L226 Difference]: Without dead ends: 13 [2020-07-17 12:15:54,349 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 [2020-07-17 12:15:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-17 12:15:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-17 12:15:54,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 12:15:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-17 12:15:54,384 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-17 12:15:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:54,385 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-17 12:15:54,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 12:15:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 12:15:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:15:54,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:54,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:54,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:15:54,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:54,387 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2020-07-17 12:15:54,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:54,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048823455] [2020-07-17 12:15:54,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:54,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048823455] [2020-07-17 12:15:54,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:54,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:15:54,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783143168] [2020-07-17 12:15:54,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:15:54,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:15:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:15:54,487 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-17 12:15:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:54,528 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-17 12:15:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:15:54,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-17 12:15:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:54,530 INFO L225 Difference]: With dead ends: 21 [2020-07-17 12:15:54,530 INFO L226 Difference]: Without dead ends: 16 [2020-07-17 12:15:54,531 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 [2020-07-17 12:15:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-17 12:15:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-17 12:15:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-17 12:15:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-17 12:15:54,538 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-07-17 12:15:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:54,538 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-17 12:15:54,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:15:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-17 12:15:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:15:54,539 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:54,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:54,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:15:54,540 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:54,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2020-07-17 12:15:54,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:54,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185660593] [2020-07-17 12:15:54,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:54,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185660593] [2020-07-17 12:15:54,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324003253] [2020-07-17 12:15:54,800 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 [2020-07-17 12:15:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:54,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-17 12:15:54,841 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:54,980 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-17 12:15:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:55,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:55,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-07-17 12:15:55,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118223536] [2020-07-17 12:15:55,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 12:15:55,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:55,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 12:15:55,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-07-17 12:15:55,034 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 16 states. [2020-07-17 12:15:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:55,285 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-17 12:15:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 12:15:55,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-07-17 12:15:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:55,288 INFO L225 Difference]: With dead ends: 37 [2020-07-17 12:15:55,288 INFO L226 Difference]: Without dead ends: 22 [2020-07-17 12:15:55,289 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 [2020-07-17 12:15:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-17 12:15:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-07-17 12:15:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-17 12:15:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-17 12:15:55,295 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-07-17 12:15:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:55,295 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-17 12:15:55,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 12:15:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-17 12:15:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:15:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:55,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:55,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-17 12:15:55,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:55,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 1 times [2020-07-17 12:15:55,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:55,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357646381] [2020-07-17 12:15:55,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:55,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357646381] [2020-07-17 12:15:55,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120083918] [2020-07-17 12:15:55,560 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) [2020-07-17 12:15:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:55,593 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-17 12:15:55,594 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:55,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:55,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-17 12:15:55,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855845551] [2020-07-17 12:15:55,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:15:55,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:55,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:15:55,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:15:55,606 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-07-17 12:15:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:55,645 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-17 12:15:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:15:55,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-17 12:15:55,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:55,646 INFO L225 Difference]: With dead ends: 30 [2020-07-17 12:15:55,646 INFO L226 Difference]: Without dead ends: 22 [2020-07-17 12:15:55,647 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 [2020-07-17 12:15:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-17 12:15:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-07-17 12:15:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-17 12:15:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-17 12:15:55,656 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-07-17 12:15:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:55,657 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-17 12:15:55,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:15:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-17 12:15:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:15:55,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:55,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:55,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:55,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:55,860 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 2 times [2020-07-17 12:15:55,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:55,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802878495] [2020-07-17 12:15:55,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-17 12:15:56,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802878495] [2020-07-17 12:15:56,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098870642] [2020-07-17 12:15:56,056 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) [2020-07-17 12:15:56,081 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:15:56,081 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:15:56,082 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-17 12:15:56,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:56,289 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-17 12:15:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:56,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:56,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2020-07-17 12:15:56,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379390988] [2020-07-17 12:15:56,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-17 12:15:56,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:56,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-17 12:15:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2020-07-17 12:15:56,332 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 21 states. [2020-07-17 12:15:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:56,902 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-17 12:15:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 12:15:56,902 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2020-07-17 12:15:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:56,903 INFO L225 Difference]: With dead ends: 40 [2020-07-17 12:15:56,904 INFO L226 Difference]: Without dead ends: 28 [2020-07-17 12:15:56,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 12:15:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-17 12:15:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-17 12:15:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-17 12:15:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-17 12:15:56,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-07-17 12:15:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:56,911 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-17 12:15:56,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-17 12:15:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-17 12:15:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 12:15:56,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:56,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:57,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:57,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1753373675, now seen corresponding path program 2 times [2020-07-17 12:15:57,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:57,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332842964] [2020-07-17 12:15:57,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:57,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332842964] [2020-07-17 12:15:57,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508608524] [2020-07-17 12:15:57,189 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:57,226 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:15:57,227 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:15:57,227 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 12:15:57,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:57,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:57,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-17 12:15:57,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895686882] [2020-07-17 12:15:57,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:15:57,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:57,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:15:57,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:15:57,254 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-07-17 12:15:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:57,296 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-17 12:15:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:15:57,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-07-17 12:15:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:57,298 INFO L225 Difference]: With dead ends: 39 [2020-07-17 12:15:57,298 INFO L226 Difference]: Without dead ends: 31 [2020-07-17 12:15:57,299 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 [2020-07-17 12:15:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-17 12:15:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-07-17 12:15:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 12:15:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-07-17 12:15:57,304 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2020-07-17 12:15:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:57,305 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-07-17 12:15:57,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:15:57,305 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-07-17 12:15:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-17 12:15:57,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:57,306 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:57,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:57,508 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:57,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1094958777, now seen corresponding path program 3 times [2020-07-17 12:15:57,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:57,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000363877] [2020-07-17 12:15:57,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:57,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000363877] [2020-07-17 12:15:57,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297160205] [2020-07-17 12:15:57,592 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 [2020-07-17 12:15:57,619 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-07-17 12:15:57,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:15:57,621 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-17 12:15:57,622 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:57,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:57,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-07-17 12:15:57,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086724608] [2020-07-17 12:15:57,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:15:57,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:15:57,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:15:57,634 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-07-17 12:15:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:57,676 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-07-17 12:15:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:15:57,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-07-17 12:15:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:57,678 INFO L225 Difference]: With dead ends: 42 [2020-07-17 12:15:57,678 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 12:15:57,679 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 [2020-07-17 12:15:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 12:15:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-07-17 12:15:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-17 12:15:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-07-17 12:15:57,685 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2020-07-17 12:15:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:57,685 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-07-17 12:15:57,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:15:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-07-17 12:15:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 12:15:57,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:57,687 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:57,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-17 12:15:57,900 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 4 times [2020-07-17 12:15:57,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:57,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394879966] [2020-07-17 12:15:57,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:57,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394879966] [2020-07-17 12:15:57,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279140539] [2020-07-17 12:15:57,995 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 [2020-07-17 12:15:58,023 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-17 12:15:58,023 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:15:58,024 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-17 12:15:58,026 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:58,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:58,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-07-17 12:15:58,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823278994] [2020-07-17 12:15:58,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:15:58,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:58,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:15:58,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:15:58,036 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 9 states. [2020-07-17 12:15:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:58,110 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-17 12:15:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:15:58,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-07-17 12:15:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:58,112 INFO L225 Difference]: With dead ends: 45 [2020-07-17 12:15:58,113 INFO L226 Difference]: Without dead ends: 37 [2020-07-17 12:15:58,113 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 [2020-07-17 12:15:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-17 12:15:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-07-17 12:15:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-17 12:15:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-07-17 12:15:58,118 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2020-07-17 12:15:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:58,119 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-07-17 12:15:58,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:15:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-07-17 12:15:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 12:15:58,120 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:58,120 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:58,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:58,328 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:58,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:58,328 INFO L82 PathProgramCache]: Analyzing trace with hash 144867641, now seen corresponding path program 5 times [2020-07-17 12:15:58,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:58,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497253289] [2020-07-17 12:15:58,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:58,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497253289] [2020-07-17 12:15:58,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867218516] [2020-07-17 12:15:58,438 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 [2020-07-17 12:15:58,465 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-07-17 12:15:58,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:15:58,466 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-17 12:15:58,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:58,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:58,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-07-17 12:15:58,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508992197] [2020-07-17 12:15:58,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 12:15:58,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 12:15:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:15:58,480 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 10 states. [2020-07-17 12:15:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:58,549 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-17 12:15:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:15:58,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-17 12:15:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:58,551 INFO L225 Difference]: With dead ends: 48 [2020-07-17 12:15:58,551 INFO L226 Difference]: Without dead ends: 40 [2020-07-17 12:15:58,552 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 [2020-07-17 12:15:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-17 12:15:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-07-17 12:15:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 12:15:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-07-17 12:15:58,563 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2020-07-17 12:15:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:58,565 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-07-17 12:15:58,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 12:15:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-07-17 12:15:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-17 12:15:58,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:58,567 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:58,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:58,784 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash -232382699, now seen corresponding path program 6 times [2020-07-17 12:15:58,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:58,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676347732] [2020-07-17 12:15:58,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:58,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676347732] [2020-07-17 12:15:58,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205008507] [2020-07-17 12:15:58,866 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 [2020-07-17 12:15:58,900 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-07-17 12:15:58,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:15:58,901 INFO L264 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-17 12:15:58,904 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:58,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:15:58,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-07-17 12:15:58,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201769214] [2020-07-17 12:15:58,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 12:15:58,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:58,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 12:15:58,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-07-17 12:15:58,916 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-07-17 12:15:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:59,010 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-07-17 12:15:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 12:15:59,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-07-17 12:15:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:59,012 INFO L225 Difference]: With dead ends: 51 [2020-07-17 12:15:59,012 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 12:15:59,012 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 [2020-07-17 12:15:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 12:15:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-17 12:15:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-17 12:15:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-07-17 12:15:59,018 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2020-07-17 12:15:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:59,019 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-07-17 12:15:59,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 12:15:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-07-17 12:15:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 12:15:59,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:59,020 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:59,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-17 12:15:59,235 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:59,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:59,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 7 times [2020-07-17 12:15:59,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:59,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725846344] [2020-07-17 12:15:59,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:59,290 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:15:59,291 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:15:59,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 12:15:59,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:15:59 BoogieIcfgContainer [2020-07-17 12:15:59,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:15:59,324 INFO L168 Benchmark]: Toolchain (without parser) took 5934.60 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 104.0 MB in the beginning and 156.8 MB in the end (delta: -52.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:59,325 INFO L168 Benchmark]: CDTParser took 1.64 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 12:15:59,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.30 ms. Allocated memory is still 145.8 MB. Free memory was 103.6 MB in the beginning and 93.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:59,327 INFO L168 Benchmark]: Boogie Preprocessor took 115.79 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 93.8 MB in the beginning and 181.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:59,328 INFO L168 Benchmark]: RCFGBuilder took 277.81 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 168.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:59,329 INFO L168 Benchmark]: TraceAbstraction took 5302.47 ms. Allocated memory was 201.9 MB in the beginning and 245.4 MB in the end (delta: 43.5 MB). Free memory was 168.9 MB in the beginning and 156.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:59,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.64 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.30 ms. Allocated memory is still 145.8 MB. Free memory was 103.6 MB in the beginning and 93.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.79 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 93.8 MB in the beginning and 181.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 277.81 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 168.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5302.47 ms. Allocated memory was 201.9 MB in the beginning and 245.4 MB in the end (delta: 43.5 MB). Free memory was 168.9 MB in the beginning and 156.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 55.6 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=2, n=10] [L13] i++ VAL [i=2, n=2, n=10] [L13] COND TRUE i<=n VAL [i=2, n=10, n=2] [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=4, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=10, n=6] [L13] i++ VAL [i=4, n=10, n=6] [L13] COND TRUE i<=n VAL [i=4, n=6, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=10, n=8] [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=14, n=10] [L13] COND TRUE i<=n VAL [i=8, n=10, n=14] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=16, n=10] [L13] i++ VAL [i=9, n=10, n=16] [L13] COND TRUE i<=n VAL [i=9, n=10, n=16] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=10, n=18] [L13] i++ VAL [i=10, n=18, n=10] [L13] COND TRUE i<=n VAL [i=10, n=10, n=18] [L14] COND FALSE !(i<10) VAL [i=10, n=18, n=10] [L13] i++ VAL [i=11, n=18, n=10] [L13] COND FALSE !(i<=n) VAL [i=11, n=18, n=10] [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: 5.1s, 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, 1.3s 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, 1.4s 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...