/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:29:57,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:29:57,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:29:57,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:29:57,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:29:57,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:29:57,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:29:57,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:29:57,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:29:57,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:29:57,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:29:57,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:29:57,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:29:57,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:29:57,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:29:57,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:29:57,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:29:57,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:29:57,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:29:57,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:29:57,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:29:57,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:29:57,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:29:57,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:29:57,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:29:57,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:29:57,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:29:57,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:29:57,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 20:29:57,497 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:29:57,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:29:57,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:29:57,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:29:57,499 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:29:57,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:29:57,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:29:57,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:29:57,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:29:57,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:29:57,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:29:57,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:29:57,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:29:57,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:29:57,502 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:29:57,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:29:57,503 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:29:57,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:29:57,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:29:57,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:29:57,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:29:57,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:29:57,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:29:57,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:29:57,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:29:57,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:29:57,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:29:57,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:29:57,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:29:57,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:29:57,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:29:57,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:29:57,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:29:57,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:29:57,838 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:29:57,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-11-23 20:29:57,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35b1b5956/fef99889af494d20aa6949f8f8fc98b4/FLAG3b207647b [2019-11-23 20:29:58,328 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:29:58,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2019-11-23 20:29:58,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35b1b5956/fef99889af494d20aa6949f8f8fc98b4/FLAG3b207647b [2019-11-23 20:29:58,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35b1b5956/fef99889af494d20aa6949f8f8fc98b4 [2019-11-23 20:29:58,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:29:58,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:29:58,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:29:58,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:29:58,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:29:58,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:29:58" (1/1) ... [2019-11-23 20:29:58,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39911a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:58, skipping insertion in model container [2019-11-23 20:29:58,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:29:58" (1/1) ... [2019-11-23 20:29:58,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:29:58,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:29:59,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:29:59,069 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:29:59,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:29:59,207 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:29:59,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59 WrapperNode [2019-11-23 20:29:59,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:29:59,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:29:59,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:29:59,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:29:59,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:29:59,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:29:59,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:29:59,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:29:59,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... [2019-11-23 20:29:59,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:29:59,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:29:59,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:29:59,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:29:59,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:29:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:29:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:29:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:29:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:29:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:29:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:29:59,697 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:29:59,697 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 20:29:59,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:29:59 BoogieIcfgContainer [2019-11-23 20:29:59,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:29:59,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:29:59,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:29:59,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:29:59,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:29:58" (1/3) ... [2019-11-23 20:29:59,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dab99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:29:59, skipping insertion in model container [2019-11-23 20:29:59,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:29:59" (2/3) ... [2019-11-23 20:29:59,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dab99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:29:59, skipping insertion in model container [2019-11-23 20:29:59,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:29:59" (3/3) ... [2019-11-23 20:29:59,710 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2019-11-23 20:29:59,729 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:29:59,736 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:29:59,748 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:29:59,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:29:59,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:29:59,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:29:59,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:29:59,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:29:59,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:29:59,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:29:59,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:29:59,784 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-23 20:29:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 20:29:59,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:29:59,791 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:29:59,791 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:29:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:29:59,796 INFO L82 PathProgramCache]: Analyzing trace with hash 730030661, now seen corresponding path program 1 times [2019-11-23 20:29:59,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:29:59,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224320441] [2019-11-23 20:29:59,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:29:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:29:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:29:59,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224320441] [2019-11-23 20:29:59,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:29:59,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:29:59,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597951237] [2019-11-23 20:29:59,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:29:59,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:29:59,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:29:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:29:59,978 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2019-11-23 20:30:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:00,119 INFO L93 Difference]: Finished difference Result 61 states and 111 transitions. [2019-11-23 20:30:00,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:30:00,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-23 20:30:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:00,131 INFO L225 Difference]: With dead ends: 61 [2019-11-23 20:30:00,132 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 20:30:00,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:30:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 20:30:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-23 20:30:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-23 20:30:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-11-23 20:30:00,171 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2019-11-23 20:30:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:00,171 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-11-23 20:30:00,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:30:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-11-23 20:30:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-23 20:30:00,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:00,173 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:00,174 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:00,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:00,174 INFO L82 PathProgramCache]: Analyzing trace with hash 798141757, now seen corresponding path program 1 times [2019-11-23 20:30:00,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:00,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966349716] [2019-11-23 20:30:00,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 20:30:00,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966349716] [2019-11-23 20:30:00,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176335759] [2019-11-23 20:30:00,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:00,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 20:30:00,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 20:30:00,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:00,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 20:30:00,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947379859] [2019-11-23 20:30:00,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 20:30:00,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 20:30:00,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:30:00,360 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2019-11-23 20:30:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:00,500 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2019-11-23 20:30:00,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:30:00,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-23 20:30:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:00,502 INFO L225 Difference]: With dead ends: 68 [2019-11-23 20:30:00,502 INFO L226 Difference]: Without dead ends: 40 [2019-11-23 20:30:00,503 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:30:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-23 20:30:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-23 20:30:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-23 20:30:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-11-23 20:30:00,512 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 29 [2019-11-23 20:30:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:00,512 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-11-23 20:30:00,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 20:30:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-11-23 20:30:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-23 20:30:00,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:00,514 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:00,727 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:00,727 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1968111935, now seen corresponding path program 2 times [2019-11-23 20:30:00,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:00,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785803088] [2019-11-23 20:30:00,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-23 20:30:00,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785803088] [2019-11-23 20:30:00,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150931486] [2019-11-23 20:30:00,849 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:00,916 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:30:00,917 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:30:00,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:30:00,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-23 20:30:00,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:00,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-23 20:30:00,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391403850] [2019-11-23 20:30:00,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 20:30:00,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 20:30:00,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:30:00,953 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2019-11-23 20:30:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:01,078 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2019-11-23 20:30:01,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:30:01,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-23 20:30:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:01,080 INFO L225 Difference]: With dead ends: 83 [2019-11-23 20:30:01,080 INFO L226 Difference]: Without dead ends: 48 [2019-11-23 20:30:01,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:30:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-23 20:30:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-23 20:30:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-23 20:30:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-11-23 20:30:01,090 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2019-11-23 20:30:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:01,090 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-11-23 20:30:01,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 20:30:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-11-23 20:30:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-23 20:30:01,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:01,093 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:01,297 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:01,298 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1959606083, now seen corresponding path program 3 times [2019-11-23 20:30:01,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:01,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874015924] [2019-11-23 20:30:01,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-23 20:30:01,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874015924] [2019-11-23 20:30:01,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663863297] [2019-11-23 20:30:01,440 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:01,539 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 20:30:01,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:30:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 20:30:01,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-23 20:30:01,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:01,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-23 20:30:01,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473858046] [2019-11-23 20:30:01,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 20:30:01,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:01,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 20:30:01,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-23 20:30:01,564 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 7 states. [2019-11-23 20:30:01,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:01,713 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2019-11-23 20:30:01,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 20:30:01,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-11-23 20:30:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:01,715 INFO L225 Difference]: With dead ends: 98 [2019-11-23 20:30:01,715 INFO L226 Difference]: Without dead ends: 56 [2019-11-23 20:30:01,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-23 20:30:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-23 20:30:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-23 20:30:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-23 20:30:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-11-23 20:30:01,725 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 45 [2019-11-23 20:30:01,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:01,725 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-23 20:30:01,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 20:30:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2019-11-23 20:30:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-23 20:30:01,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:01,727 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:01,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:01,933 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash -33175999, now seen corresponding path program 4 times [2019-11-23 20:30:01,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:01,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660664377] [2019-11-23 20:30:01,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 20:30:02,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660664377] [2019-11-23 20:30:02,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740655332] [2019-11-23 20:30:02,104 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:02,178 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:30:02,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:30:02,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 20:30:02,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 20:30:02,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:02,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-23 20:30:02,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969787054] [2019-11-23 20:30:02,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 20:30:02,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:02,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 20:30:02,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-23 20:30:02,219 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 8 states. [2019-11-23 20:30:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:02,392 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2019-11-23 20:30:02,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 20:30:02,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2019-11-23 20:30:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:02,395 INFO L225 Difference]: With dead ends: 113 [2019-11-23 20:30:02,395 INFO L226 Difference]: Without dead ends: 64 [2019-11-23 20:30:02,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-23 20:30:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-23 20:30:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-23 20:30:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-23 20:30:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2019-11-23 20:30:02,411 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 53 [2019-11-23 20:30:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:02,412 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2019-11-23 20:30:02,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 20:30:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2019-11-23 20:30:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-23 20:30:02,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:02,419 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:02,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:02,629 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1705114563, now seen corresponding path program 5 times [2019-11-23 20:30:02,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:02,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668486639] [2019-11-23 20:30:02,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-23 20:30:02,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668486639] [2019-11-23 20:30:02,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471217912] [2019-11-23 20:30:02,804 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 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 [2019-11-23 20:30:36,136 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-23 20:30:36,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:30:36,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 20:30:36,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-23 20:30:36,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:36,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-23 20:30:36,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106282755] [2019-11-23 20:30:36,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 20:30:36,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:36,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 20:30:36,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-23 20:30:36,182 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 9 states. [2019-11-23 20:30:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:36,323 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2019-11-23 20:30:36,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 20:30:36,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-11-23 20:30:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:36,325 INFO L225 Difference]: With dead ends: 128 [2019-11-23 20:30:36,325 INFO L226 Difference]: Without dead ends: 72 [2019-11-23 20:30:36,326 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-23 20:30:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-23 20:30:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2019-11-23 20:30:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-23 20:30:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2019-11-23 20:30:36,334 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 61 [2019-11-23 20:30:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:36,334 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2019-11-23 20:30:36,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 20:30:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2019-11-23 20:30:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-23 20:30:36,335 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:36,336 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:36,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:36,551 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1731269183, now seen corresponding path program 6 times [2019-11-23 20:30:36,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:36,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083155501] [2019-11-23 20:30:36,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-23 20:30:36,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083155501] [2019-11-23 20:30:36,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684931573] [2019-11-23 20:30:36,710 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 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 [2019-11-23 20:30:38,491 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-23 20:30:38,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:30:38,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 20:30:38,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-23 20:30:38,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:38,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-23 20:30:38,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977734069] [2019-11-23 20:30:38,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 20:30:38,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:38,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 20:30:38,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 20:30:38,522 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 10 states. [2019-11-23 20:30:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:38,685 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2019-11-23 20:30:38,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 20:30:38,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2019-11-23 20:30:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:38,687 INFO L225 Difference]: With dead ends: 143 [2019-11-23 20:30:38,687 INFO L226 Difference]: Without dead ends: 80 [2019-11-23 20:30:38,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 20:30:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-23 20:30:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-11-23 20:30:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-23 20:30:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2019-11-23 20:30:38,696 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 69 [2019-11-23 20:30:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:38,696 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2019-11-23 20:30:38,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 20:30:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2019-11-23 20:30:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-23 20:30:38,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:38,698 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:38,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:38,905 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:38,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1733009475, now seen corresponding path program 7 times [2019-11-23 20:30:38,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:38,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478470644] [2019-11-23 20:30:38,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-11-23 20:30:39,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478470644] [2019-11-23 20:30:39,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335449352] [2019-11-23 20:30:39,068 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2019-11-23 20:30:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:39,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 20:30:39,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-11-23 20:30:39,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:39,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-23 20:30:39,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863064159] [2019-11-23 20:30:39,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 20:30:39,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:39,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 20:30:39,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 20:30:39,166 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 11 states. [2019-11-23 20:30:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:39,308 INFO L93 Difference]: Finished difference Result 158 states and 181 transitions. [2019-11-23 20:30:39,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 20:30:39,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2019-11-23 20:30:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:39,310 INFO L225 Difference]: With dead ends: 158 [2019-11-23 20:30:39,310 INFO L226 Difference]: Without dead ends: 88 [2019-11-23 20:30:39,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 20:30:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-23 20:30:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-11-23 20:30:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-23 20:30:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2019-11-23 20:30:39,318 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 77 [2019-11-23 20:30:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:39,319 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2019-11-23 20:30:39,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 20:30:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2019-11-23 20:30:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-23 20:30:39,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:39,320 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:39,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:39,524 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:39,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1139569985, now seen corresponding path program 8 times [2019-11-23 20:30:39,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:39,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288154560] [2019-11-23 20:30:39,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2019-11-23 20:30:39,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288154560] [2019-11-23 20:30:39,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491660514] [2019-11-23 20:30:39,644 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 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 [2019-11-23 20:30:39,717 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:30:39,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:30:39,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 20:30:39,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:30:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2019-11-23 20:30:39,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:30:39,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-23 20:30:39,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201516306] [2019-11-23 20:30:39,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 20:30:39,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:30:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 20:30:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 20:30:39,761 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 12 states. [2019-11-23 20:30:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:30:39,980 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2019-11-23 20:30:39,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 20:30:39,981 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2019-11-23 20:30:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:30:39,981 INFO L225 Difference]: With dead ends: 173 [2019-11-23 20:30:39,981 INFO L226 Difference]: Without dead ends: 96 [2019-11-23 20:30:39,982 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 20:30:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-23 20:30:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2019-11-23 20:30:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-23 20:30:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2019-11-23 20:30:39,990 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 85 [2019-11-23 20:30:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:30:39,991 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2019-11-23 20:30:39,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 20:30:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2019-11-23 20:30:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-23 20:30:39,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:30:39,992 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:30:40,204 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:30:40,205 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:30:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:30:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1607850813, now seen corresponding path program 9 times [2019-11-23 20:30:40,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:30:40,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768375760] [2019-11-23 20:30:40,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:30:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:30:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2019-11-23 20:30:40,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768375760] [2019-11-23 20:30:40,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970770719] [2019-11-23 20:30:40,345 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:31:30,238 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-23 20:31:30,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:31:30,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-23 20:31:30,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:31:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2019-11-23 20:31:30,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:31:30,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-23 20:31:30,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349338178] [2019-11-23 20:31:30,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 20:31:30,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:31:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 20:31:30,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-23 20:31:30,273 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 13 states. [2019-11-23 20:31:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:31:30,472 INFO L93 Difference]: Finished difference Result 188 states and 211 transitions. [2019-11-23 20:31:30,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 20:31:30,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2019-11-23 20:31:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:31:30,474 INFO L225 Difference]: With dead ends: 188 [2019-11-23 20:31:30,474 INFO L226 Difference]: Without dead ends: 104 [2019-11-23 20:31:30,475 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-23 20:31:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-23 20:31:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-23 20:31:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-23 20:31:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2019-11-23 20:31:30,486 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 93 [2019-11-23 20:31:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:31:30,486 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2019-11-23 20:31:30,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 20:31:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2019-11-23 20:31:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-23 20:31:30,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:31:30,487 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:31:30,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:31:30,688 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:31:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:31:30,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1782471873, now seen corresponding path program 10 times [2019-11-23 20:31:30,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:31:30,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784403751] [2019-11-23 20:31:30,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:31:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:31:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2019-11-23 20:31:30,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784403751] [2019-11-23 20:31:30,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303408024] [2019-11-23 20:31:30,942 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:31:31,061 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:31:31,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:31:31,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-23 20:31:31,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:31:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2019-11-23 20:31:31,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:31:31,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-23 20:31:31,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159428300] [2019-11-23 20:31:31,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-23 20:31:31,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:31:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-23 20:31:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-23 20:31:31,093 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 14 states. [2019-11-23 20:31:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:31:31,304 INFO L93 Difference]: Finished difference Result 203 states and 226 transitions. [2019-11-23 20:31:31,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-23 20:31:31,305 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2019-11-23 20:31:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:31:31,306 INFO L225 Difference]: With dead ends: 203 [2019-11-23 20:31:31,306 INFO L226 Difference]: Without dead ends: 112 [2019-11-23 20:31:31,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-23 20:31:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-23 20:31:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-23 20:31:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-23 20:31:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2019-11-23 20:31:31,313 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 101 [2019-11-23 20:31:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:31:31,314 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2019-11-23 20:31:31,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-23 20:31:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2019-11-23 20:31:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-23 20:31:31,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:31:31,315 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:31:31,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:31:31,519 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:31:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:31:31,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1734506173, now seen corresponding path program 11 times [2019-11-23 20:31:31,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:31:31,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140428774] [2019-11-23 20:31:31,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:31:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:31:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2019-11-23 20:31:31,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140428774] [2019-11-23 20:31:31,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270186718] [2019-11-23 20:31:31,689 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true