/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/recursive-simple/fibo_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:11:27,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:11:27,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:11:27,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:11:27,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:11:27,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:11:27,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:11:27,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:11:27,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:11:27,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:11:27,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:11:27,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:11:27,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:11:27,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:11:27,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:11:27,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:11:27,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:11:27,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:11:27,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:11:27,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:11:27,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:11:27,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:11:27,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:11:27,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:11:27,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:11:27,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:11:27,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:11:27,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:11:27,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:11:27,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:11:27,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:11:27,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:11:27,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:11:27,523 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:11:27,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:11:27,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:11:27,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:11:27,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:11:27,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:11:27,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:11:27,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:11:27,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:11:27,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:11:27,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:11:27,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:11:27,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:11:27,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:11:27,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:11:27,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:11:27,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:11:27,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:11:27,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:11:27,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:11:27,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:11:27,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:11:27,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:11:27,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:11:27,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:11:27,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:11:27,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:11:27,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:11:27,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:11:27,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:11:27,823 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:11:27,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-07-07 11:11:27,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dabda26f/8e0d5c03b54241428edaac3e5163c471/FLAG2779cdec6 [2020-07-07 11:11:28,380 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:11:28,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-07-07 11:11:28,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dabda26f/8e0d5c03b54241428edaac3e5163c471/FLAG2779cdec6 [2020-07-07 11:11:28,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dabda26f/8e0d5c03b54241428edaac3e5163c471 [2020-07-07 11:11:28,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:11:28,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:11:28,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:11:28,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:11:28,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:11:28,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:11:28" (1/1) ... [2020-07-07 11:11:28,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335da22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:28, skipping insertion in model container [2020-07-07 11:11:28,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:11:28" (1/1) ... [2020-07-07 11:11:28,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:11:28,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:11:29,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:11:29,020 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:11:29,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:11:29,051 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:11:29,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29 WrapperNode [2020-07-07 11:11:29,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:11:29,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:11:29,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:11:29,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:11:29,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... [2020-07-07 11:11:29,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:11:29,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:11:29,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:11:29,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:11:29,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:11:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:11:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:11:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-07-07 11:11:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-07-07 11:11:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:11:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:11:29,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:11:29,412 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:11:29,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:11:29 BoogieIcfgContainer [2020-07-07 11:11:29,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:11:29,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:11:29,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:11:29,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:11:29,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:11:28" (1/3) ... [2020-07-07 11:11:29,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd520c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:11:29, skipping insertion in model container [2020-07-07 11:11:29,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:29" (2/3) ... [2020-07-07 11:11:29,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd520c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:11:29, skipping insertion in model container [2020-07-07 11:11:29,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:11:29" (3/3) ... [2020-07-07 11:11:29,425 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-07-07 11:11:29,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:11:29,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:11:29,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:11:29,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:11:29,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:11:29,486 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:11:29,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:11:29,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:11:29,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:11:29,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:11:29,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:11:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-07 11:11:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:11:29,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:29,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:29,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:29,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-07-07 11:11:29,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:29,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248880988] [2020-07-07 11:11:29,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:11:29,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248880988] [2020-07-07 11:11:29,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:11:29,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:11:29,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925906170] [2020-07-07 11:11:29,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:11:29,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:29,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:11:29,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:11:29,812 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-07-07 11:11:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:29,913 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-07-07 11:11:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:11:29,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 11:11:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:29,925 INFO L225 Difference]: With dead ends: 44 [2020-07-07 11:11:29,926 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 11:11:29,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:11:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 11:11:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-07 11:11:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 11:11:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-07-07 11:11:29,979 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-07-07 11:11:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:29,979 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-07-07 11:11:29,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:11:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-07-07 11:11:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:11:29,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:29,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:29,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:11:29,983 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-07-07 11:11:29,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:29,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547931200] [2020-07-07 11:11:29,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:11:30,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547931200] [2020-07-07 11:11:30,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:11:30,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:11:30,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37013398] [2020-07-07 11:11:30,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:11:30,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:30,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:11:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:11:30,057 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-07-07 11:11:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:30,119 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-07-07 11:11:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:11:30,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-07 11:11:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:30,122 INFO L225 Difference]: With dead ends: 36 [2020-07-07 11:11:30,122 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 11:11:30,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:11:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 11:11:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-07 11:11:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 11:11:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-07-07 11:11:30,133 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-07-07 11:11:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:30,134 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-07-07 11:11:30,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:11:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-07-07 11:11:30,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:11:30,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:30,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:30,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:11:30,137 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-07-07 11:11:30,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:30,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444739226] [2020-07-07 11:11:30,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:11:30,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444739226] [2020-07-07 11:11:30,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147129809] [2020-07-07 11:11:30,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,365 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:11:30,372 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:11:30,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:30,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-07 11:11:30,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242409179] [2020-07-07 11:11:30,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:11:30,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:11:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:11:30,458 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 10 states. [2020-07-07 11:11:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:30,676 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-07-07 11:11:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:11:30,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-07 11:11:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:30,678 INFO L225 Difference]: With dead ends: 58 [2020-07-07 11:11:30,679 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 11:11:30,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:11:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 11:11:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-07 11:11:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:11:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-07-07 11:11:30,689 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-07-07 11:11:30,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:30,690 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-07-07 11:11:30,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:11:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-07-07 11:11:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:11:30,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:30,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:30,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:11:30,906 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:30,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:30,907 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-07-07 11:11:30,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:30,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327137142] [2020-07-07 11:11:30,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:11:31,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327137142] [2020-07-07 11:11:31,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072056952] [2020-07-07 11:11:31,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-07-07 11:11:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:31,078 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:11:31,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:31,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-07-07 11:11:31,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080584495] [2020-07-07 11:11:31,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:11:31,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:31,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:11:31,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:11:31,111 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 10 states. [2020-07-07 11:11:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:31,265 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-07-07 11:11:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:11:31,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-07 11:11:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:31,269 INFO L225 Difference]: With dead ends: 54 [2020-07-07 11:11:31,269 INFO L226 Difference]: Without dead ends: 50 [2020-07-07 11:11:31,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:11:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-07 11:11:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-07-07 11:11:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-07 11:11:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-07-07 11:11:31,282 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-07-07 11:11:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:31,282 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-07-07 11:11:31,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:11:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-07-07 11:11:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-07 11:11:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:31,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:31,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:31,499 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-07-07 11:11:31,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:31,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106065289] [2020-07-07 11:11:31,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-07 11:11:31,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106065289] [2020-07-07 11:11:31,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741295448] [2020-07-07 11:11:31,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:31,625 INFO L264 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:11:31,628 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-07 11:11:31,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:31,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-07-07 11:11:31,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872565234] [2020-07-07 11:11:31,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 11:11:31,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:31,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 11:11:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:11:31,689 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 11 states. [2020-07-07 11:11:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:31,975 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2020-07-07 11:11:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 11:11:31,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-07-07 11:11:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:31,979 INFO L225 Difference]: With dead ends: 108 [2020-07-07 11:11:31,979 INFO L226 Difference]: Without dead ends: 66 [2020-07-07 11:11:31,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-07-07 11:11:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-07 11:11:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-07-07 11:11:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-07 11:11:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2020-07-07 11:11:32,010 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2020-07-07 11:11:32,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:32,010 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2020-07-07 11:11:32,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 11:11:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2020-07-07 11:11:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 11:11:32,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:32,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:32,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:32,224 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:32,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-07-07 11:11:32,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:32,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586964873] [2020-07-07 11:11:32,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-07 11:11:32,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586964873] [2020-07-07 11:11:32,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029159108] [2020-07-07 11:11:32,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-07 11:11:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:32,394 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:11:32,398 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-07 11:11:32,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:32,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-07-07 11:11:32,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892726199] [2020-07-07 11:11:32,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 11:11:32,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:32,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 11:11:32,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:11:32,484 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand 14 states. [2020-07-07 11:11:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:32,877 INFO L93 Difference]: Finished difference Result 180 states and 324 transitions. [2020-07-07 11:11:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 11:11:32,878 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-07-07 11:11:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:32,883 INFO L225 Difference]: With dead ends: 180 [2020-07-07 11:11:32,883 INFO L226 Difference]: Without dead ends: 120 [2020-07-07 11:11:32,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-07-07 11:11:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-07 11:11:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2020-07-07 11:11:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-07 11:11:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 169 transitions. [2020-07-07 11:11:32,920 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 169 transitions. Word has length 40 [2020-07-07 11:11:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:32,920 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 169 transitions. [2020-07-07 11:11:32,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 11:11:32,921 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 169 transitions. [2020-07-07 11:11:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-07 11:11:32,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:32,925 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 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] [2020-07-07 11:11:33,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:33,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:33,140 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-07-07 11:11:33,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:33,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637559378] [2020-07-07 11:11:33,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-07 11:11:33,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637559378] [2020-07-07 11:11:33,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455567482] [2020-07-07 11:11:33,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:33,359 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:11:33,362 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-07 11:11:33,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:33,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-07 11:11:33,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429267283] [2020-07-07 11:11:33,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 11:11:33,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:33,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 11:11:33,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:11:33,461 INFO L87 Difference]: Start difference. First operand 106 states and 169 transitions. Second operand 15 states. [2020-07-07 11:11:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:33,964 INFO L93 Difference]: Finished difference Result 258 states and 498 transitions. [2020-07-07 11:11:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 11:11:33,964 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-07-07 11:11:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:33,968 INFO L225 Difference]: With dead ends: 258 [2020-07-07 11:11:33,968 INFO L226 Difference]: Without dead ends: 158 [2020-07-07 11:11:33,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-07-07 11:11:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-07 11:11:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2020-07-07 11:11:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-07 11:11:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2020-07-07 11:11:33,995 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2020-07-07 11:11:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:33,996 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2020-07-07 11:11:33,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 11:11:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2020-07-07 11:11:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-07 11:11:34,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:34,000 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:34,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 11:11:34,215 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1229769625, now seen corresponding path program 1 times [2020-07-07 11:11:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:34,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811819857] [2020-07-07 11:11:34,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-07-07 11:11:34,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811819857] [2020-07-07 11:11:34,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875377389] [2020-07-07 11:11:34,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:34,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:11:34,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-07-07 11:11:34,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:34,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-07-07 11:11:34,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423052915] [2020-07-07 11:11:34,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 11:11:34,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 11:11:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-07-07 11:11:34,651 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand 18 states. [2020-07-07 11:11:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:35,255 INFO L93 Difference]: Finished difference Result 243 states and 465 transitions. [2020-07-07 11:11:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 11:11:35,256 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 96 [2020-07-07 11:11:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:35,262 INFO L225 Difference]: With dead ends: 243 [2020-07-07 11:11:35,262 INFO L226 Difference]: Without dead ends: 110 [2020-07-07 11:11:35,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-07-07 11:11:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-07 11:11:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-07-07 11:11:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-07 11:11:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-07-07 11:11:35,294 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 96 [2020-07-07 11:11:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:35,295 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-07-07 11:11:35,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 11:11:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-07-07 11:11:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-07 11:11:35,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:35,298 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:35,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:35,514 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 665434804, now seen corresponding path program 1 times [2020-07-07 11:11:35,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:35,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643497826] [2020-07-07 11:11:35,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 62 proven. 123 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-07-07 11:11:35,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643497826] [2020-07-07 11:11:35,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761068659] [2020-07-07 11:11:35,783 INFO L94 rtionOrderModulation]: Keeping assertion order 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 [2020-07-07 11:11:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:35,839 INFO L264 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:11:35,844 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 25 proven. 190 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-07-07 11:11:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:35,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2020-07-07 11:11:35,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856993167] [2020-07-07 11:11:35,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:11:35,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:35,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:11:35,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:11:35,967 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 19 states. [2020-07-07 11:11:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:36,594 INFO L93 Difference]: Finished difference Result 217 states and 375 transitions. [2020-07-07 11:11:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 11:11:36,595 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 137 [2020-07-07 11:11:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:36,598 INFO L225 Difference]: With dead ends: 217 [2020-07-07 11:11:36,598 INFO L226 Difference]: Without dead ends: 137 [2020-07-07 11:11:36,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 11:11:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-07 11:11:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 117. [2020-07-07 11:11:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-07 11:11:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 172 transitions. [2020-07-07 11:11:36,615 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 172 transitions. Word has length 137 [2020-07-07 11:11:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:36,616 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 172 transitions. [2020-07-07 11:11:36,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:11:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 172 transitions. [2020-07-07 11:11:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-07-07 11:11:36,620 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:36,620 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 26, 26, 22, 21, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:36,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:36,834 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1635105538, now seen corresponding path program 2 times [2020-07-07 11:11:36,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:36,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485698105] [2020-07-07 11:11:36,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 203 proven. 574 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2020-07-07 11:11:37,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485698105] [2020-07-07 11:11:37,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774743001] [2020-07-07 11:11:37,901 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 [2020-07-07 11:11:38,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:11:38,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:38,044 INFO L264 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-07 11:11:38,072 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 113 proven. 807 refuted. 0 times theorem prover too weak. 3121 trivial. 0 not checked. [2020-07-07 11:11:38,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:38,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2020-07-07 11:11:38,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192111889] [2020-07-07 11:11:38,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 11:11:38,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:38,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 11:11:38,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-07-07 11:11:38,307 INFO L87 Difference]: Start difference. First operand 117 states and 172 transitions. Second operand 20 states. [2020-07-07 11:11:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:39,089 INFO L93 Difference]: Finished difference Result 263 states and 450 transitions. [2020-07-07 11:11:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 11:11:39,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 380 [2020-07-07 11:11:39,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:39,095 INFO L225 Difference]: With dead ends: 263 [2020-07-07 11:11:39,096 INFO L226 Difference]: Without dead ends: 158 [2020-07-07 11:11:39,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 11:11:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-07 11:11:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2020-07-07 11:11:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-07-07 11:11:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 227 transitions. [2020-07-07 11:11:39,133 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 227 transitions. Word has length 380 [2020-07-07 11:11:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:39,134 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 227 transitions. [2020-07-07 11:11:39,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 11:11:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 227 transitions. [2020-07-07 11:11:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-07-07 11:11:39,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:39,149 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 31, 31, 27, 26, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 12, 9, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:39,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 11:11:39,363 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:39,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2116007060, now seen corresponding path program 3 times [2020-07-07 11:11:39,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:39,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123914662] [2020-07-07 11:11:39,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6088 backedges. 288 proven. 774 refuted. 0 times theorem prover too weak. 5026 trivial. 0 not checked. [2020-07-07 11:11:40,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123914662] [2020-07-07 11:11:40,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681008170] [2020-07-07 11:11:40,520 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 [2020-07-07 11:11:40,600 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-07-07 11:11:40,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:40,602 INFO L264 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:11:40,611 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6088 backedges. 910 proven. 42 refuted. 0 times theorem prover too weak. 5136 trivial. 0 not checked. [2020-07-07 11:11:40,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:40,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2020-07-07 11:11:40,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359966601] [2020-07-07 11:11:40,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 11:11:40,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:40,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 11:11:40,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:11:40,862 INFO L87 Difference]: Start difference. First operand 148 states and 227 transitions. Second operand 21 states. [2020-07-07 11:11:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:41,361 INFO L93 Difference]: Finished difference Result 311 states and 523 transitions. [2020-07-07 11:11:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 11:11:41,361 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 462 [2020-07-07 11:11:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:41,365 INFO L225 Difference]: With dead ends: 311 [2020-07-07 11:11:41,366 INFO L226 Difference]: Without dead ends: 171 [2020-07-07 11:11:41,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2020-07-07 11:11:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-07 11:11:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2020-07-07 11:11:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-07 11:11:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 246 transitions. [2020-07-07 11:11:41,389 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 246 transitions. Word has length 462 [2020-07-07 11:11:41,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:41,390 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 246 transitions. [2020-07-07 11:11:41,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 11:11:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 246 transitions. [2020-07-07 11:11:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-07-07 11:11:41,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:41,401 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 30, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 11, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:41,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:41,615 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1110022815, now seen corresponding path program 4 times [2020-07-07 11:11:41,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:41,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499377484] [2020-07-07 11:11:41,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 395 proven. 1348 refuted. 0 times theorem prover too weak. 5506 trivial. 0 not checked. [2020-07-07 11:11:43,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499377484] [2020-07-07 11:11:43,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772588240] [2020-07-07 11:11:43,251 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 [2020-07-07 11:11:43,440 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:11:43,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:43,445 INFO L264 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 11:11:43,454 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 455 proven. 987 refuted. 0 times theorem prover too weak. 5807 trivial. 0 not checked. [2020-07-07 11:11:43,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:43,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 29 [2020-07-07 11:11:43,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409396888] [2020-07-07 11:11:43,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-07 11:11:43,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:43,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-07 11:11:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2020-07-07 11:11:43,849 INFO L87 Difference]: Start difference. First operand 168 states and 246 transitions. Second operand 29 states. [2020-07-07 11:11:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:45,235 INFO L93 Difference]: Finished difference Result 391 states and 657 transitions. [2020-07-07 11:11:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-07 11:11:45,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 504 [2020-07-07 11:11:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:45,241 INFO L225 Difference]: With dead ends: 391 [2020-07-07 11:11:45,241 INFO L226 Difference]: Without dead ends: 186 [2020-07-07 11:11:45,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=348, Invalid=2202, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 11:11:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-07-07 11:11:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 167. [2020-07-07 11:11:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-07 11:11:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 226 transitions. [2020-07-07 11:11:45,263 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 226 transitions. Word has length 504 [2020-07-07 11:11:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:45,264 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 226 transitions. [2020-07-07 11:11:45,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-07 11:11:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 226 transitions. [2020-07-07 11:11:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-07 11:11:45,272 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:45,272 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 28, 28, 25, 23, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 11, 8, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:45,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:45,487 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:45,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:45,488 INFO L82 PathProgramCache]: Analyzing trace with hash 725561814, now seen corresponding path program 5 times [2020-07-07 11:11:45,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:45,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172082641] [2020-07-07 11:11:45,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4709 backedges. 332 proven. 772 refuted. 0 times theorem prover too weak. 3605 trivial. 0 not checked. [2020-07-07 11:11:46,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172082641] [2020-07-07 11:11:46,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874082839] [2020-07-07 11:11:46,620 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 [2020-07-07 11:11:46,722 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-07-07 11:11:46,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:46,725 INFO L264 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:11:46,734 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4709 backedges. 2424 proven. 63 refuted. 0 times theorem prover too weak. 2222 trivial. 0 not checked. [2020-07-07 11:11:46,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:46,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 24 [2020-07-07 11:11:46,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462414678] [2020-07-07 11:11:46,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-07 11:11:46,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-07 11:11:46,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-07-07 11:11:46,961 INFO L87 Difference]: Start difference. First operand 167 states and 226 transitions. Second operand 24 states. [2020-07-07 11:11:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:47,443 INFO L93 Difference]: Finished difference Result 330 states and 456 transitions. [2020-07-07 11:11:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 11:11:47,444 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 409 [2020-07-07 11:11:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:47,447 INFO L225 Difference]: With dead ends: 330 [2020-07-07 11:11:47,447 INFO L226 Difference]: Without dead ends: 173 [2020-07-07 11:11:47,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2020-07-07 11:11:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-07-07 11:11:47,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2020-07-07 11:11:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-07 11:11:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2020-07-07 11:11:47,465 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 409 [2020-07-07 11:11:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:47,465 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2020-07-07 11:11:47,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-07 11:11:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2020-07-07 11:11:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-07-07 11:11:47,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:47,470 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:47,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-07 11:11:47,683 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash -515597281, now seen corresponding path program 6 times [2020-07-07 11:11:47,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:47,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637301025] [2020-07-07 11:11:47,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 461 proven. 880 refuted. 0 times theorem prover too weak. 3675 trivial. 0 not checked. [2020-07-07 11:11:48,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637301025] [2020-07-07 11:11:48,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318254565] [2020-07-07 11:11:48,785 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:48,936 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2020-07-07 11:11:48,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:48,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:11:48,946 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 341 proven. 409 refuted. 0 times theorem prover too weak. 4266 trivial. 0 not checked. [2020-07-07 11:11:49,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:49,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10] total 26 [2020-07-07 11:11:49,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202782986] [2020-07-07 11:11:49,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 11:11:49,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:49,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 11:11:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-07-07 11:11:49,106 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand 26 states. [2020-07-07 11:11:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:49,920 INFO L93 Difference]: Finished difference Result 374 states and 514 transitions. [2020-07-07 11:11:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 11:11:49,921 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 422 [2020-07-07 11:11:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:49,924 INFO L225 Difference]: With dead ends: 374 [2020-07-07 11:11:49,924 INFO L226 Difference]: Without dead ends: 207 [2020-07-07 11:11:49,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 11:11:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-07 11:11:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 178. [2020-07-07 11:11:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-07 11:11:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 231 transitions. [2020-07-07 11:11:49,940 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 231 transitions. Word has length 422 [2020-07-07 11:11:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:49,941 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 231 transitions. [2020-07-07 11:11:49,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 11:11:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 231 transitions. [2020-07-07 11:11:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-07-07 11:11:49,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:49,946 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 31, 31, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 12, 12, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:50,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-07 11:11:50,160 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:50,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1759823621, now seen corresponding path program 7 times [2020-07-07 11:11:50,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:50,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826581258] [2020-07-07 11:11:50,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 702 proven. 1548 refuted. 0 times theorem prover too weak. 5824 trivial. 0 not checked. [2020-07-07 11:11:51,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826581258] [2020-07-07 11:11:51,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578146460] [2020-07-07 11:11:51,954 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:52,114 INFO L264 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 11:11:52,119 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 760 proven. 830 refuted. 0 times theorem prover too weak. 6484 trivial. 0 not checked. [2020-07-07 11:11:52,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:52,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 33 [2020-07-07 11:11:52,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980519065] [2020-07-07 11:11:52,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 11:11:52,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 11:11:52,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 11:11:52,393 INFO L87 Difference]: Start difference. First operand 178 states and 231 transitions. Second operand 33 states. [2020-07-07 11:11:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:53,805 INFO L93 Difference]: Finished difference Result 403 states and 605 transitions. [2020-07-07 11:11:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-07 11:11:53,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 531 [2020-07-07 11:11:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:53,808 INFO L225 Difference]: With dead ends: 403 [2020-07-07 11:11:53,808 INFO L226 Difference]: Without dead ends: 218 [2020-07-07 11:11:53,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=556, Invalid=3866, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 11:11:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-07 11:11:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 175. [2020-07-07 11:11:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-07 11:11:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2020-07-07 11:11:53,825 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 531 [2020-07-07 11:11:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:53,825 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2020-07-07 11:11:53,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 11:11:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2020-07-07 11:11:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-07-07 11:11:53,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:53,829 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:54,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-07 11:11:54,043 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 8 times [2020-07-07 11:11:54,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:54,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048047862] [2020-07-07 11:11:54,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 726 proven. 662 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2020-07-07 11:11:55,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048047862] [2020-07-07 11:11:55,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526370398] [2020-07-07 11:11:55,041 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:55,153 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:11:55,153 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:55,155 INFO L264 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:11:55,162 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 655 proven. 176 refuted. 0 times theorem prover too weak. 3539 trivial. 0 not checked. [2020-07-07 11:11:55,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:55,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11] total 28 [2020-07-07 11:11:55,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982291251] [2020-07-07 11:11:55,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 11:11:55,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:55,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 11:11:55,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2020-07-07 11:11:55,297 INFO L87 Difference]: Start difference. First operand 175 states and 216 transitions. Second operand 28 states. [2020-07-07 11:11:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:56,034 INFO L93 Difference]: Finished difference Result 374 states and 476 transitions. [2020-07-07 11:11:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 11:11:56,034 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 395 [2020-07-07 11:11:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:56,037 INFO L225 Difference]: With dead ends: 374 [2020-07-07 11:11:56,037 INFO L226 Difference]: Without dead ends: 210 [2020-07-07 11:11:56,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1557, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 11:11:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-07 11:11:56,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 176. [2020-07-07 11:11:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-07 11:11:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2020-07-07 11:11:56,050 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 395 [2020-07-07 11:11:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:56,051 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2020-07-07 11:11:56,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 11:11:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2020-07-07 11:11:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-07-07 11:11:56,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:56,056 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:56,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:56,272 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 9 times [2020-07-07 11:11:56,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:56,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518402690] [2020-07-07 11:11:56,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 835 proven. 1688 refuted. 0 times theorem prover too weak. 6890 trivial. 0 not checked. [2020-07-07 11:11:57,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518402690] [2020-07-07 11:11:57,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589102753] [2020-07-07 11:11:57,758 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:57,873 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-07-07 11:11:57,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:57,875 INFO L264 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 11:11:57,882 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 874 proven. 170 refuted. 0 times theorem prover too weak. 8369 trivial. 0 not checked. [2020-07-07 11:11:58,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:58,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 10] total 35 [2020-07-07 11:11:58,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069423004] [2020-07-07 11:11:58,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-07 11:11:58,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:58,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-07 11:11:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 11:11:58,153 INFO L87 Difference]: Start difference. First operand 176 states and 210 transitions. Second operand 35 states. [2020-07-07 11:11:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:59,595 INFO L93 Difference]: Finished difference Result 376 states and 467 transitions. [2020-07-07 11:11:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-07 11:11:59,595 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 572 [2020-07-07 11:11:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:59,600 INFO L225 Difference]: With dead ends: 376 [2020-07-07 11:11:59,601 INFO L226 Difference]: Without dead ends: 242 [2020-07-07 11:11:59,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=551, Invalid=3871, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 11:11:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-07-07 11:11:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 185. [2020-07-07 11:11:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-07 11:11:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 216 transitions. [2020-07-07 11:11:59,625 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 216 transitions. Word has length 572 [2020-07-07 11:11:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:59,626 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 216 transitions. [2020-07-07 11:11:59,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-07 11:11:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 216 transitions. [2020-07-07 11:11:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-07-07 11:11:59,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:59,630 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:59,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-07-07 11:11:59,845 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 10 times [2020-07-07 11:11:59,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:59,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868243624] [2020-07-07 11:11:59,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-07-07 11:12:02,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868243624] [2020-07-07 11:12:02,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060178253] [2020-07-07 11:12:02,400 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:02,535 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:12:02,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:12:02,547 INFO L264 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 271 conjunts are in the unsatisfiable core [2020-07-07 11:12:02,557 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-07-07 11:12:04,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:04,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2020-07-07 11:12:04,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680326430] [2020-07-07 11:12:04,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-07 11:12:04,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-07 11:12:04,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-07-07 11:12:04,607 INFO L87 Difference]: Start difference. First operand 185 states and 216 transitions. Second operand 52 states. [2020-07-07 11:12:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:05,410 INFO L93 Difference]: Finished difference Result 192 states and 222 transitions. [2020-07-07 11:12:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 11:12:05,410 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 463 [2020-07-07 11:12:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:05,412 INFO L225 Difference]: With dead ends: 192 [2020-07-07 11:12:05,412 INFO L226 Difference]: Without dead ends: 149 [2020-07-07 11:12:05,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 650 SyntacticMatches, 35 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-07-07 11:12:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-07 11:12:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-07-07 11:12:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-07 11:12:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2020-07-07 11:12:05,422 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 463 [2020-07-07 11:12:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:05,423 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2020-07-07 11:12:05,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-07 11:12:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2020-07-07 11:12:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-07-07 11:12:05,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:12:05,427 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 37, 37, 31, 31, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 13, 11, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:12:05,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-07 11:12:05,641 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:12:05,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:12:05,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1112347357, now seen corresponding path program 11 times [2020-07-07 11:12:05,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:12:05,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163460248] [2020-07-07 11:12:05,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:12:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 575 proven. 1278 refuted. 0 times theorem prover too weak. 6233 trivial. 0 not checked. [2020-07-07 11:12:07,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163460248] [2020-07-07 11:12:07,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904084272] [2020-07-07 11:12:07,031 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:07,166 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-07-07 11:12:07,166 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:12:07,168 INFO L264 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-07 11:12:07,174 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 4517 proven. 174 refuted. 0 times theorem prover too weak. 3395 trivial. 0 not checked. [2020-07-07 11:12:07,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:07,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 29 [2020-07-07 11:12:07,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410334408] [2020-07-07 11:12:07,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-07 11:12:07,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:07,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-07 11:12:07,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2020-07-07 11:12:07,441 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand 29 states. [2020-07-07 11:12:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:08,259 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2020-07-07 11:12:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 11:12:08,259 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 531 [2020-07-07 11:12:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:08,260 INFO L225 Difference]: With dead ends: 252 [2020-07-07 11:12:08,260 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:12:08,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 11:12:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:12:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:12:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:12:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:12:08,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 531 [2020-07-07 11:12:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:08,264 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:12:08,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-07 11:12:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:12:08,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:12:08,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:08,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:12:10,335 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 7 [2020-07-07 11:12:10,502 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 1 [2020-07-07 11:12:10,751 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 1 [2020-07-07 11:12:11,468 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 22 [2020-07-07 11:12:11,751 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 13 [2020-07-07 11:12:12,853 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 179 DAG size of output: 45 [2020-07-07 11:12:12,858 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:12:12,858 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:12:12,858 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:12:12,858 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:12:12,858 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:12:12,858 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:12:12,859 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-07-07 11:12:12,859 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-07-07 11:12:12,859 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-07-07 11:12:12,859 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-07-07 11:12:12,859 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-07 11:12:12,859 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-07-07 11:12:12,859 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 8 main_~x~0) (<= main_~x~0 8)) [2020-07-07 11:12:12,860 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-07-07 11:12:12,860 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-07-07 11:12:12,860 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-07-07 11:12:12,860 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 3))) [2020-07-07 11:12:12,860 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-07-07 11:12:12,860 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (<= 5 fibo2_~n) (or (<= 7 fibo2_~n) (and (<= |fibo2_#t~ret2| 3) (<= 3 |fibo2_#t~ret2|))) (= fibo2_~n |fibo2_#in~n|) (or (and (<= 8 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 8)) (<= |fibo2_#in~n| 5) (<= 8 |fibo2_#in~n|))) [2020-07-07 11:12:12,860 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-07-07 11:12:12,860 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-07-07 11:12:12,861 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-07-07 11:12:12,861 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-07-07 11:12:12,861 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-07-07 11:12:12,861 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-07-07 11:12:12,861 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (or (not (<= |fibo1_#in~n| 3)) (<= |fibo1_#in~n| 2)) (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2020-07-07 11:12:12,861 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-07-07 11:12:12,861 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse3 (<= |fibo1_#in~n| 5))) (let ((.cse0 (and (<= 3 |fibo1_#t~ret0|) (<= 5 fibo1_~n) .cse3 (<= |fibo1_#t~ret0| 3))) (.cse1 (<= 6 fibo1_~n)) (.cse2 (<= |fibo1_#in~n| 3))) (and (or .cse0 .cse1 .cse2 (and (<= |fibo1_#t~ret0| 2) (<= 2 |fibo1_#t~ret0|))) (or (<= |fibo1_#in~n| 4) .cse0 .cse1) (< 1 fibo1_~n) (or (<= 7 fibo1_~n) .cse3 (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|))) (or (not .cse2) (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1))) (or (<= 9 |fibo1_#in~n|) (and (<= 13 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 13)) (<= |fibo1_#in~n| 7)) (= fibo1_~n |fibo1_#in~n|)))) [2020-07-07 11:12:12,862 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-07-07 11:12:12,862 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-07-07 11:12:12,862 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-07-07 11:12:12,862 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-07-07 11:12:12,862 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-07-07 11:12:12,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:12:12 BoogieIcfgContainer [2020-07-07 11:12:12,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:12:12,868 INFO L168 Benchmark]: Toolchain (without parser) took 44053.61 ms. Allocated memory was 145.8 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 103.1 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-07-07 11:12:12,869 INFO L168 Benchmark]: CDTParser took 0.18 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 11:12:12,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.78 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:12,870 INFO L168 Benchmark]: Boogie Preprocessor took 118.30 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.2 MB in the beginning and 182.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:12,871 INFO L168 Benchmark]: RCFGBuilder took 245.94 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 168.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:12,871 INFO L168 Benchmark]: TraceAbstraction took 43449.51 ms. Allocated memory was 202.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 168.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-07-07 11:12:12,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.78 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.30 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.2 MB in the beginning and 182.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.94 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 168.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43449.51 ms. Allocated memory was 202.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 168.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.9s, OverallIterations: 19, TraceHistogramMax: 42, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 707 SDtfs, 1501 SDslu, 7997 SDs, 0 SdLazy, 10770 SolverSat, 1714 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7221 GetRequests, 6596 SyntacticMatches, 35 SemanticMatches, 590 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6229 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 310 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 1136 PreInvPairs, 2058 NumberOfFragments, 163 HoareAnnotationTreeSize, 1136 FomulaSimplifications, 39099 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 11 FomulaSimplificationsInter, 56868 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 10203 NumberOfCodeBlocks, 9143 NumberOfCodeBlocksAsserted, 120 NumberOfCheckSat, 10167 ConstructedInterpolants, 0 QuantifiedInterpolants, 7159303 SizeOfPredicates, 98 NumberOfNonLiveVariables, 8907 ConjunctsInSsa, 465 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 109992/127766 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...