/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:35:32,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:35:32,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:35:32,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 03:35:32,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:35:32,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:35:32,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:35:32,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:35:32,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:35:32,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:35:32,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:35:32,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:35:32,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:35:32,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:35:32,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:35:32,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:35:32,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:35:32,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:35:32,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:35:32,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:35:32,723 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 [2020-07-20 03:35:32,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:35:32,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:35:32,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:35:32,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:35:32,740 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:35:32,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:35:32,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:35:32,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:35:32,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:35:32,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:35:32,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:35:32,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:35:32,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:35:32,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:35:32,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:35:32,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:35:32,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:35:32,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:35:32,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:35:32,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:35:32,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:35:32,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:35:32,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:35:32,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:35:32,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:35:32,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:35:32,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:35:32,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:35:32,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:35:32,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:35:33,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:35:33,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:35:33,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:35:33,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:35:33,084 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:35:33,085 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-07-20 03:35:33,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f065575d/77ced97aa89e4b18ba1764b7675d3956/FLAG6b3435569 [2020-07-20 03:35:33,649 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:35:33,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-07-20 03:35:33,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f065575d/77ced97aa89e4b18ba1764b7675d3956/FLAG6b3435569 [2020-07-20 03:35:33,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f065575d/77ced97aa89e4b18ba1764b7675d3956 [2020-07-20 03:35:34,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:35:34,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:35:34,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:35:34,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:35:34,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:35:34,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b073ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34, skipping insertion in model container [2020-07-20 03:35:34,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:35:34,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:35:34,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:35:34,227 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:35:34,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:35:34,252 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:35:34,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34 WrapperNode [2020-07-20 03:35:34,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:35:34,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:35:34,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:35:34,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:35:34,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (1/1) ... [2020-07-20 03:35:34,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:35:34,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:35:34,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:35:34,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:35:34,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (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 [2020-07-20 03:35:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:35:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:35:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-20 03:35:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:35:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:35:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:35:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-20 03:35:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:35:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:35:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:35:34,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:35:34,593 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 03:35:34,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:35:34 BoogieIcfgContainer [2020-07-20 03:35:34,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:35:34,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:35:34,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:35:34,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:35:34,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:35:34" (1/3) ... [2020-07-20 03:35:34,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aa6fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:35:34, skipping insertion in model container [2020-07-20 03:35:34,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:35:34" (2/3) ... [2020-07-20 03:35:34,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aa6fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:35:34, skipping insertion in model container [2020-07-20 03:35:34,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:35:34" (3/3) ... [2020-07-20 03:35:34,605 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-07-20 03:35:34,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:35:34,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:35:34,635 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:35:34,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:35:34,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:35:34,662 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:35:34,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:35:34,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:35:34,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:35:34,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:35:34,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:35:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 03:35:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 03:35:34,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:34,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:34,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-07-20 03:35:34,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:34,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160967766] [2020-07-20 03:35:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:35:34,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160967766] [2020-07-20 03:35:34,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:35:34,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:35:34,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855301689] [2020-07-20 03:35:34,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:35:34,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:34,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:35:34,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:35:34,948 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-07-20 03:35:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:35,047 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-20 03:35:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:35:35,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 03:35:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:35,059 INFO L225 Difference]: With dead ends: 30 [2020-07-20 03:35:35,059 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 03:35:35,062 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 [2020-07-20 03:35:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 03:35:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-20 03:35:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 03:35:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-20 03:35:35,102 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-20 03:35:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:35,103 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-20 03:35:35,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:35:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-20 03:35:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:35:35,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:35,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:35,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:35:35,107 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-07-20 03:35:35,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:35,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007173742] [2020-07-20 03:35:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 03:35:35,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007173742] [2020-07-20 03:35:35,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736481679] [2020-07-20 03:35:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ba5bebd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:35,301 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5ba5bebd issued 3 check-sat command(s) [2020-07-20 03:35:35,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:35:35,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 03:35:35,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:35:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 03:35:35,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:35:35,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 03:35:35,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870929946] [2020-07-20 03:35:35,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 03:35:35,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:35,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 03:35:35,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:35:35,384 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-07-20 03:35:35,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:35,441 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-20 03:35:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:35:35,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-07-20 03:35:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:35,443 INFO L225 Difference]: With dead ends: 25 [2020-07-20 03:35:35,443 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 03:35:35,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-20 03:35:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 03:35:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 03:35:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 03:35:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-20 03:35:35,452 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-07-20 03:35:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:35,452 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-20 03:35:35,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 03:35:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-20 03:35:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:35:35,454 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:35,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:35,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 03:35:35,668 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-07-20 03:35:35,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:35,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900734830] [2020-07-20 03:35:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 03:35:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900734830] [2020-07-20 03:35:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585412667] [2020-07-20 03:35:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30df2a59 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:35,867 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30df2a59 issued 3 check-sat command(s) [2020-07-20 03:35:35,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:35:35,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 03:35:35,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:35:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 03:35:35,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:35:35,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-20 03:35:35,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945759831] [2020-07-20 03:35:35,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 03:35:35,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:35,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 03:35:35,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 03:35:35,948 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-07-20 03:35:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:36,047 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-07-20 03:35:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 03:35:36,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-07-20 03:35:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:36,050 INFO L225 Difference]: With dead ends: 28 [2020-07-20 03:35:36,050 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 03:35:36,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-07-20 03:35:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 03:35:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 03:35:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 03:35:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-20 03:35:36,068 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-07-20 03:35:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:36,069 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-20 03:35:36,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 03:35:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-20 03:35:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 03:35:36,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:36,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:36,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:36,287 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-07-20 03:35:36,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:36,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601962303] [2020-07-20 03:35:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 03:35:36,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601962303] [2020-07-20 03:35:36,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611711835] [2020-07-20 03:35:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b3628b3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:36,503 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b3628b3 issued 3 check-sat command(s) [2020-07-20 03:35:36,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:35:36,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 03:35:36,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:35:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 03:35:36,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:35:36,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 03:35:36,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303009437] [2020-07-20 03:35:36,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 03:35:36,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:36,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 03:35:36,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-20 03:35:36,549 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-07-20 03:35:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:36,629 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 03:35:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 03:35:36,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-07-20 03:35:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:36,631 INFO L225 Difference]: With dead ends: 31 [2020-07-20 03:35:36,631 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 03:35:36,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:35:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 03:35:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-20 03:35:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 03:35:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-20 03:35:36,639 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-07-20 03:35:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:36,640 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-20 03:35:36,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 03:35:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-20 03:35:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 03:35:36,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:36,641 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:36,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:36,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:36,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-07-20 03:35:36,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:36,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751079753] [2020-07-20 03:35:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 03:35:37,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751079753] [2020-07-20 03:35:37,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713282525] [2020-07-20 03:35:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19cada6f 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 [2020-07-20 03:35:37,067 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19cada6f issued 3 check-sat command(s) [2020-07-20 03:35:37,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:35:37,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 03:35:37,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:35:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 03:35:37,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:35:37,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-20 03:35:37,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676220512] [2020-07-20 03:35:37,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 03:35:37,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:37,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 03:35:37,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-20 03:35:37,113 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-07-20 03:35:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:37,205 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-07-20 03:35:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 03:35:37,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-07-20 03:35:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:37,207 INFO L225 Difference]: With dead ends: 34 [2020-07-20 03:35:37,207 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 03:35:37,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-07-20 03:35:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 03:35:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 03:35:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 03:35:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-07-20 03:35:37,215 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-07-20 03:35:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:37,215 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-07-20 03:35:37,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 03:35:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-07-20 03:35:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 03:35:37,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:37,217 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:37,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:37,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:37,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-07-20 03:35:37,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:37,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264272588] [2020-07-20 03:35:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 03:35:37,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264272588] [2020-07-20 03:35:37,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925238315] [2020-07-20 03:35:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1c1606c1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:37,913 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1c1606c1 issued 4 check-sat command(s) [2020-07-20 03:35:37,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:35:37,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 03:35:37,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:35:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 03:35:38,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:35:38,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-07-20 03:35:38,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411581492] [2020-07-20 03:35:38,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 03:35:38,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:38,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 03:35:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-07-20 03:35:38,013 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 15 states. [2020-07-20 03:35:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:38,113 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-07-20 03:35:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 03:35:38,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-07-20 03:35:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:38,115 INFO L225 Difference]: With dead ends: 37 [2020-07-20 03:35:38,115 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 03:35:38,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-07-20 03:35:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 03:35:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-20 03:35:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-20 03:35:38,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-20 03:35:38,122 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-07-20 03:35:38,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:38,122 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-20 03:35:38,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 03:35:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-20 03:35:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 03:35:38,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:35:38,124 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:35:38,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 03:35:38,339 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:35:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:35:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-07-20 03:35:38,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:35:38,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490081879] [2020-07-20 03:35:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@386eb5ba [2020-07-20 03:35:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:35:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-20 03:35:38,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490081879] [2020-07-20 03:35:38,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048621854] [2020-07-20 03:35:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48030d08 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 [2020-07-20 03:35:38,549 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48030d08 issued 3 check-sat command(s) [2020-07-20 03:35:38,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:35:38,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 03:35:38,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:35:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-20 03:35:38,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 03:35:38,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 14 [2020-07-20 03:35:38,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060738556] [2020-07-20 03:35:38,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 03:35:38,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:35:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 03:35:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:35:38,609 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-07-20 03:35:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:35:38,729 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-20 03:35:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 03:35:38,730 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-07-20 03:35:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:35:38,731 INFO L225 Difference]: With dead ends: 33 [2020-07-20 03:35:38,731 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:35:38,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-07-20 03:35:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:35:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:35:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:35:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:35:38,733 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-07-20 03:35:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:35:38,734 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:35:38,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 03:35:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:35:38,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:35:38,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:35:38,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:35:38,977 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 03:35:38,977 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:35:38,977 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:35:38,977 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:35:38,978 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:35:38,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:35:38,978 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-07-20 03:35:38,978 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-07-20 03:35:38,978 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-07-20 03:35:38,978 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-20 03:35:38,979 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-20 03:35:38,979 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2020-07-20 03:35:38,979 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-20 03:35:38,979 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-07-20 03:35:38,979 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 03:35:38,980 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 03:35:38,980 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-07-20 03:35:38,980 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-07-20 03:35:38,980 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 03:35:38,980 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-07-20 03:35:38,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:35:38 BoogieIcfgContainer [2020-07-20 03:35:38,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:35:38,991 INFO L168 Benchmark]: Toolchain (without parser) took 4977.59 ms. Allocated memory was 142.1 MB in the beginning and 253.2 MB in the end (delta: 111.1 MB). Free memory was 99.4 MB in the beginning and 117.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 93.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:35:38,992 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:35:38,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.19 ms. Allocated memory is still 142.1 MB. Free memory was 98.9 MB in the beginning and 89.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:35:38,993 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 ms. Allocated memory is still 142.1 MB. Free memory was 89.8 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:35:38,994 INFO L168 Benchmark]: RCFGBuilder took 315.56 ms. Allocated memory was 142.1 MB in the beginning and 199.8 MB in the end (delta: 57.7 MB). Free memory was 88.4 MB in the beginning and 168.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:35:38,995 INFO L168 Benchmark]: TraceAbstraction took 4388.53 ms. Allocated memory was 199.8 MB in the beginning and 253.2 MB in the end (delta: 53.5 MB). Free memory was 168.4 MB in the beginning and 117.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:35:38,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.19 ms. Allocated memory is still 142.1 MB. Free memory was 98.9 MB in the beginning and 89.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.43 ms. Allocated memory is still 142.1 MB. Free memory was 89.8 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.56 ms. Allocated memory was 142.1 MB in the beginning and 199.8 MB in the end (delta: 57.7 MB). Free memory was 88.4 MB in the beginning and 168.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4388.53 ms. Allocated memory was 199.8 MB in the beginning and 253.2 MB in the end (delta: 53.5 MB). Free memory was 168.4 MB in the beginning and 117.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 74 SDslu, 536 SDs, 0 SdLazy, 263 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 261 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 421 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 38256 SizeOfPredicates, 27 NumberOfNonLiveVariables, 433 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 396/588 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...