java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:32:02,098 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:32:02,100 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:32:02,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:32:02,116 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:32:02,117 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:32:02,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:32:02,119 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:32:02,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:32:02,122 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:32:02,123 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:32:02,123 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:32:02,124 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:32:02,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:32:02,126 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:32:02,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:32:02,131 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:32:02,133 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:32:02,135 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:32:02,136 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:32:02,138 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:32:02,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:32:02,144 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:32:02,144 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:32:02,152 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:32:02,153 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:32:02,154 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:32:02,154 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:32:02,154 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:32:02,154 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:32:02,154 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:32:02,154 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:32:02,155 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:32:02,156 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:32:02,156 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:32:02,156 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:32:02,156 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:32:02,156 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:32:02,156 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:32:02,156 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:32:02,157 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:32:02,157 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:32:02,157 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:32:02,157 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:32:02,157 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:32:02,158 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:32:02,159 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:32:02,159 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:32:02,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:32:02,201 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:32:02,205 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:32:02,206 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:32:02,206 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:32:02,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_false-valid-memtrack.i [2018-01-23 14:32:02,383 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:32:02,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:32:02,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:32:02,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:32:02,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:32:02,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb98ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02, skipping insertion in model container [2018-01-23 14:32:02,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,411 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:32:02,449 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:32:02,573 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:32:02,602 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:32:02,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02 WrapperNode [2018-01-23 14:32:02,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:32:02,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:32:02,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:32:02,613 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:32:02,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... [2018-01-23 14:32:02,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:32:02,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:32:02,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:32:02,653 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:32:02,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (1/1) ... No working directory specified, using /storage/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 [2018-01-23 14:32:02,703 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:32:02,704 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:32:02,704 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-23 14:32:02,704 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-23 14:32:02,704 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-23 14:32:02,704 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:32:02,704 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:32:02,704 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:32:02,704 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-23 14:32:02,705 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-23 14:32:02,706 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:32:02,706 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:32:02,706 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:32:03,146 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:32:03,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:32:03 BoogieIcfgContainer [2018-01-23 14:32:03,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:32:03,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:32:03,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:32:03,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:32:03,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:32:02" (1/3) ... [2018-01-23 14:32:03,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba27cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:32:03, skipping insertion in model container [2018-01-23 14:32:03,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:32:02" (2/3) ... [2018-01-23 14:32:03,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba27cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:32:03, skipping insertion in model container [2018-01-23 14:32:03,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:32:03" (3/3) ... [2018-01-23 14:32:03,155 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01_false-valid-memtrack.i [2018-01-23 14:32:03,165 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:32:03,174 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-23 14:32:03,227 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:32:03,227 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:32:03,227 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:32:03,228 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:32:03,228 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:32:03,228 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:32:03,228 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:32:03,228 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-23 14:32:03,229 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:32:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-23 14:32:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-23 14:32:03,262 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:03,264 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:03,264 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:03,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1561242995, now seen corresponding path program 1 times [2018-01-23 14:32:03,272 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:03,272 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:03,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,331 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:03,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:03,409 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:03,494 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:32:03,495 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:32:03,497 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:32:03,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:32:03,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:03,600 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2018-01-23 14:32:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:03,648 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2018-01-23 14:32:03,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:32:03,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-23 14:32:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:03,657 INFO L225 Difference]: With dead ends: 248 [2018-01-23 14:32:03,657 INFO L226 Difference]: Without dead ends: 96 [2018-01-23 14:32:03,661 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-23 14:32:03,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-01-23 14:32:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-23 14:32:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-23 14:32:03,699 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 25 [2018-01-23 14:32:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:03,699 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-23 14:32:03,699 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:32:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-23 14:32:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:32:03,701 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:03,701 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:03,701 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:03,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1948874992, now seen corresponding path program 1 times [2018-01-23 14:32:03,702 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:03,702 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:03,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,703 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:03,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:03,725 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:03,811 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:32:03,811 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:32:03,813 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:32:03,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:32:03,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:32:03,813 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 4 states. [2018-01-23 14:32:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:03,850 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-23 14:32:03,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:32:03,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-23 14:32:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:03,853 INFO L225 Difference]: With dead ends: 234 [2018-01-23 14:32:03,853 INFO L226 Difference]: Without dead ends: 146 [2018-01-23 14:32:03,854 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:32:03,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-23 14:32:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-01-23 14:32:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-23 14:32:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2018-01-23 14:32:03,863 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 27 [2018-01-23 14:32:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:03,863 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2018-01-23 14:32:03,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:32:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2018-01-23 14:32:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:32:03,864 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:03,864 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:03,864 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:03,865 INFO L82 PathProgramCache]: Analyzing trace with hash -245124692, now seen corresponding path program 1 times [2018-01-23 14:32:03,865 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:03,865 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:03,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:03,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:03,888 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:03,933 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:32:03,933 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:32:03,933 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:32:03,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:32:03,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:03,934 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 3 states. [2018-01-23 14:32:03,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:03,974 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2018-01-23 14:32:03,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:32:03,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-23 14:32:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:03,977 INFO L225 Difference]: With dead ends: 147 [2018-01-23 14:32:03,977 INFO L226 Difference]: Without dead ends: 146 [2018-01-23 14:32:03,978 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-23 14:32:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-23 14:32:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-23 14:32:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2018-01-23 14:32:03,992 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 29 [2018-01-23 14:32:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:03,992 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2018-01-23 14:32:03,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:32:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2018-01-23 14:32:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-23 14:32:03,995 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:03,995 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:03,995 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1224197024, now seen corresponding path program 1 times [2018-01-23 14:32:03,995 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:03,996 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:03,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:03,997 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:03,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:04,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:04,075 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:32:04,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:32:04,076 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:32:04,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:32:04,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:04,077 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 3 states. [2018-01-23 14:32:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:04,097 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2018-01-23 14:32:04,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:32:04,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-01-23 14:32:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:04,099 INFO L225 Difference]: With dead ends: 298 [2018-01-23 14:32:04,100 INFO L226 Difference]: Without dead ends: 160 [2018-01-23 14:32:04,101 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-23 14:32:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-01-23 14:32:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-23 14:32:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-23 14:32:04,114 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 43 [2018-01-23 14:32:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:04,114 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-23 14:32:04,115 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:32:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-23 14:32:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-23 14:32:04,117 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:04,117 INFO L322 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:04,117 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:04,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1546322841, now seen corresponding path program 1 times [2018-01-23 14:32:04,117 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:04,118 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:04,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,119 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:04,119 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:04,144 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:04,197 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:04,198 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:04,208 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:04,271 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:04,323 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:04,324 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-01-23 14:32:04,324 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:32:04,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:32:04,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:32:04,324 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand 5 states. [2018-01-23 14:32:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:04,353 INFO L93 Difference]: Finished difference Result 316 states and 353 transitions. [2018-01-23 14:32:04,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:32:04,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-01-23 14:32:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:04,356 INFO L225 Difference]: With dead ends: 316 [2018-01-23 14:32:04,356 INFO L226 Difference]: Without dead ends: 174 [2018-01-23 14:32:04,357 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:32:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-23 14:32:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2018-01-23 14:32:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-23 14:32:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2018-01-23 14:32:04,369 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 50 [2018-01-23 14:32:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:04,369 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2018-01-23 14:32:04,369 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:32:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2018-01-23 14:32:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-23 14:32:04,372 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:04,372 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:04,372 INFO L371 AbstractCegarLoop]: === Iteration 6 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:04,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1302825344, now seen corresponding path program 2 times [2018-01-23 14:32:04,372 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:04,372 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:04,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,373 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:04,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:04,403 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:04,486 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:04,486 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:04,499 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:32:04,534 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:04,562 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:04,564 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:04,568 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:04,606 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:04,606 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-23 14:32:04,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:32:04,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:32:04,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:32:04,607 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand 6 states. [2018-01-23 14:32:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:04,650 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2018-01-23 14:32:04,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:32:04,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-01-23 14:32:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:04,652 INFO L225 Difference]: With dead ends: 344 [2018-01-23 14:32:04,652 INFO L226 Difference]: Without dead ends: 188 [2018-01-23 14:32:04,652 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:32:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-23 14:32:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2018-01-23 14:32:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-23 14:32:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2018-01-23 14:32:04,680 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 57 [2018-01-23 14:32:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:04,680 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2018-01-23 14:32:04,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:32:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2018-01-23 14:32:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-01-23 14:32:04,683 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:04,683 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:04,683 INFO L371 AbstractCegarLoop]: === Iteration 7 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1322589767, now seen corresponding path program 3 times [2018-01-23 14:32:04,684 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:04,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:04,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,685 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:04,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:04,711 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:04,822 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:04,822 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:04,835 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:32:04,862 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:04,880 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:04,915 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:05,010 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:05,012 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:05,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:05,069 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:05,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-01-23 14:32:05,070 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:32:05,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:32:05,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:32:05,071 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 7 states. [2018-01-23 14:32:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:05,108 INFO L93 Difference]: Finished difference Result 372 states and 409 transitions. [2018-01-23 14:32:05,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-23 14:32:05,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-01-23 14:32:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:05,110 INFO L225 Difference]: With dead ends: 372 [2018-01-23 14:32:05,110 INFO L226 Difference]: Without dead ends: 202 [2018-01-23 14:32:05,111 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:32:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-23 14:32:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2018-01-23 14:32:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-23 14:32:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 208 transitions. [2018-01-23 14:32:05,122 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 208 transitions. Word has length 64 [2018-01-23 14:32:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:05,122 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 208 transitions. [2018-01-23 14:32:05,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:32:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 208 transitions. [2018-01-23 14:32:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-23 14:32:05,124 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:05,124 INFO L322 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:05,124 INFO L371 AbstractCegarLoop]: === Iteration 8 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1826064224, now seen corresponding path program 4 times [2018-01-23 14:32:05,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:05,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:05,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:05,126 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:05,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:05,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:05,251 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:05,251 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:05,264 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:32:05,395 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:05,400 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:05,442 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:05,442 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-01-23 14:32:05,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-23 14:32:05,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-23 14:32:05,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-23 14:32:05,443 INFO L87 Difference]: Start difference. First operand 192 states and 208 transitions. Second operand 8 states. [2018-01-23 14:32:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:05,520 INFO L93 Difference]: Finished difference Result 400 states and 437 transitions. [2018-01-23 14:32:05,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:32:05,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2018-01-23 14:32:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:05,522 INFO L225 Difference]: With dead ends: 400 [2018-01-23 14:32:05,523 INFO L226 Difference]: Without dead ends: 216 [2018-01-23 14:32:05,524 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-23 14:32:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-23 14:32:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2018-01-23 14:32:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-23 14:32:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2018-01-23 14:32:05,533 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 71 [2018-01-23 14:32:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:05,534 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2018-01-23 14:32:05,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-23 14:32:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2018-01-23 14:32:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-23 14:32:05,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:05,535 INFO L322 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:05,535 INFO L371 AbstractCegarLoop]: === Iteration 9 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1568376793, now seen corresponding path program 5 times [2018-01-23 14:32:05,536 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:05,536 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:05,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:05,537 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:05,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:05,561 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:05,656 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:05,656 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:05,663 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:32:05,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:05,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:05,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:05,696 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:05,706 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:05,743 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:05,747 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:05,752 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:05,834 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:05,835 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-01-23 14:32:05,835 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:32:05,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:32:05,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:32:05,836 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 9 states. [2018-01-23 14:32:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:05,927 INFO L93 Difference]: Finished difference Result 428 states and 465 transitions. [2018-01-23 14:32:05,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:32:05,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2018-01-23 14:32:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:05,928 INFO L225 Difference]: With dead ends: 428 [2018-01-23 14:32:05,928 INFO L226 Difference]: Without dead ends: 230 [2018-01-23 14:32:05,929 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:32:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-23 14:32:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2018-01-23 14:32:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-23 14:32:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 236 transitions. [2018-01-23 14:32:05,937 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 236 transitions. Word has length 78 [2018-01-23 14:32:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:05,937 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 236 transitions. [2018-01-23 14:32:05,938 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:32:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 236 transitions. [2018-01-23 14:32:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-01-23 14:32:05,939 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:05,939 INFO L322 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:05,939 INFO L371 AbstractCegarLoop]: === Iteration 10 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586944, now seen corresponding path program 6 times [2018-01-23 14:32:05,940 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:05,940 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:05,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:05,941 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:05,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:05,963 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:06,046 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:06,046 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:06,051 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:32:06,074 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:06,100 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:06,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:06,232 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:06,300 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:06,576 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:07,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:07,544 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:07,549 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:07,605 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:07,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-01-23 14:32:07,605 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:32:07,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:32:07,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:32:07,606 INFO L87 Difference]: Start difference. First operand 220 states and 236 transitions. Second operand 10 states. [2018-01-23 14:32:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:07,654 INFO L93 Difference]: Finished difference Result 456 states and 493 transitions. [2018-01-23 14:32:07,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-23 14:32:07,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-01-23 14:32:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:07,656 INFO L225 Difference]: With dead ends: 456 [2018-01-23 14:32:07,656 INFO L226 Difference]: Without dead ends: 244 [2018-01-23 14:32:07,657 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:32:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-23 14:32:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2018-01-23 14:32:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-23 14:32:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 250 transitions. [2018-01-23 14:32:07,668 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 250 transitions. Word has length 85 [2018-01-23 14:32:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:07,668 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 250 transitions. [2018-01-23 14:32:07,668 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:32:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 250 transitions. [2018-01-23 14:32:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-23 14:32:07,670 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:07,670 INFO L322 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:07,670 INFO L371 AbstractCegarLoop]: === Iteration 11 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1071712775, now seen corresponding path program 7 times [2018-01-23 14:32:07,671 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:07,671 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:07,672 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:07,672 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:07,672 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:07,698 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:07,835 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:07,835 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:07,848 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:07,899 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:07,945 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:07,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-01-23 14:32:07,946 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-23 14:32:07,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-23 14:32:07,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-23 14:32:07,947 INFO L87 Difference]: Start difference. First operand 234 states and 250 transitions. Second operand 11 states. [2018-01-23 14:32:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:08,039 INFO L93 Difference]: Finished difference Result 484 states and 521 transitions. [2018-01-23 14:32:08,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:32:08,039 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2018-01-23 14:32:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:08,041 INFO L225 Difference]: With dead ends: 484 [2018-01-23 14:32:08,041 INFO L226 Difference]: Without dead ends: 258 [2018-01-23 14:32:08,043 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-23 14:32:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-23 14:32:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2018-01-23 14:32:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-01-23 14:32:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 264 transitions. [2018-01-23 14:32:08,055 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 264 transitions. Word has length 92 [2018-01-23 14:32:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:08,055 INFO L432 AbstractCegarLoop]: Abstraction has 248 states and 264 transitions. [2018-01-23 14:32:08,055 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-23 14:32:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 264 transitions. [2018-01-23 14:32:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-23 14:32:08,057 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:08,057 INFO L322 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:08,057 INFO L371 AbstractCegarLoop]: === Iteration 12 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:08,058 INFO L82 PathProgramCache]: Analyzing trace with hash -214947040, now seen corresponding path program 8 times [2018-01-23 14:32:08,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:08,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:08,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:08,059 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:08,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:08,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:08,283 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:08,283 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:08,298 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:32:08,327 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:08,359 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:08,361 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:08,364 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:08,405 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:08,406 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-01-23 14:32:08,406 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:32:08,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:32:08,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:32:08,407 INFO L87 Difference]: Start difference. First operand 248 states and 264 transitions. Second operand 12 states. [2018-01-23 14:32:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:08,482 INFO L93 Difference]: Finished difference Result 512 states and 549 transitions. [2018-01-23 14:32:08,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-23 14:32:08,482 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-01-23 14:32:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:08,484 INFO L225 Difference]: With dead ends: 512 [2018-01-23 14:32:08,485 INFO L226 Difference]: Without dead ends: 272 [2018-01-23 14:32:08,486 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:32:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-23 14:32:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2018-01-23 14:32:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-01-23 14:32:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 278 transitions. [2018-01-23 14:32:08,498 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 278 transitions. Word has length 99 [2018-01-23 14:32:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:08,498 INFO L432 AbstractCegarLoop]: Abstraction has 262 states and 278 transitions. [2018-01-23 14:32:08,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:32:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 278 transitions. [2018-01-23 14:32:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-23 14:32:08,500 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:08,500 INFO L322 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:08,500 INFO L371 AbstractCegarLoop]: === Iteration 13 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:08,500 INFO L82 PathProgramCache]: Analyzing trace with hash -862508007, now seen corresponding path program 9 times [2018-01-23 14:32:08,500 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:08,501 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:08,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:08,502 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:08,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:08,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:08,693 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:08,694 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:08,698 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:32:08,717 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:08,734 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:08,765 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:08,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:08,946 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:09,024 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:09,621 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:10,376 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:10,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:13,327 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:13,329 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:13,334 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:13,386 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:13,387 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-01-23 14:32:13,387 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-23 14:32:13,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-23 14:32:13,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:32:13,388 INFO L87 Difference]: Start difference. First operand 262 states and 278 transitions. Second operand 13 states. [2018-01-23 14:32:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:13,590 INFO L93 Difference]: Finished difference Result 540 states and 577 transitions. [2018-01-23 14:32:13,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-23 14:32:13,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2018-01-23 14:32:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:13,592 INFO L225 Difference]: With dead ends: 540 [2018-01-23 14:32:13,592 INFO L226 Difference]: Without dead ends: 286 [2018-01-23 14:32:13,593 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:32:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-23 14:32:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 276. [2018-01-23 14:32:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-01-23 14:32:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 292 transitions. [2018-01-23 14:32:13,614 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 292 transitions. Word has length 106 [2018-01-23 14:32:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:13,614 INFO L432 AbstractCegarLoop]: Abstraction has 276 states and 292 transitions. [2018-01-23 14:32:13,614 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-23 14:32:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 292 transitions. [2018-01-23 14:32:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-23 14:32:13,615 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:13,615 INFO L322 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:13,615 INFO L371 AbstractCegarLoop]: === Iteration 14 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash -346763008, now seen corresponding path program 10 times [2018-01-23 14:32:13,616 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:13,616 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:13,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:13,617 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:13,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:13,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:13,925 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:13,925 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:13,930 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:32:14,448 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:14,451 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:14,497 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:14,497 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-01-23 14:32:14,497 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-23 14:32:14,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-23 14:32:14,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:32:14,498 INFO L87 Difference]: Start difference. First operand 276 states and 292 transitions. Second operand 14 states. [2018-01-23 14:32:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:14,592 INFO L93 Difference]: Finished difference Result 568 states and 605 transitions. [2018-01-23 14:32:14,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-23 14:32:14,593 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 113 [2018-01-23 14:32:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:14,595 INFO L225 Difference]: With dead ends: 568 [2018-01-23 14:32:14,595 INFO L226 Difference]: Without dead ends: 300 [2018-01-23 14:32:14,596 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:32:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-23 14:32:14,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2018-01-23 14:32:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-01-23 14:32:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 306 transitions. [2018-01-23 14:32:14,608 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 306 transitions. Word has length 113 [2018-01-23 14:32:14,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:14,609 INFO L432 AbstractCegarLoop]: Abstraction has 290 states and 306 transitions. [2018-01-23 14:32:14,609 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-23 14:32:14,609 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 306 transitions. [2018-01-23 14:32:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-23 14:32:14,611 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:14,611 INFO L322 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:14,611 INFO L371 AbstractCegarLoop]: === Iteration 15 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash 719727161, now seen corresponding path program 11 times [2018-01-23 14:32:14,611 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:14,612 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:14,612 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:14,613 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:14,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:14,639 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:14,854 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:14,854 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:14,863 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:32:14,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,902 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,912 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:14,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:15,075 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:15,544 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:15,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:16,315 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:16,318 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:16,324 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:16,371 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:16,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-01-23 14:32:16,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-23 14:32:16,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-23 14:32:16,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-23 14:32:16,373 INFO L87 Difference]: Start difference. First operand 290 states and 306 transitions. Second operand 15 states. [2018-01-23 14:32:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:16,455 INFO L93 Difference]: Finished difference Result 596 states and 633 transitions. [2018-01-23 14:32:16,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:32:16,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 120 [2018-01-23 14:32:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:16,458 INFO L225 Difference]: With dead ends: 596 [2018-01-23 14:32:16,458 INFO L226 Difference]: Without dead ends: 314 [2018-01-23 14:32:16,459 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-23 14:32:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-01-23 14:32:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 304. [2018-01-23 14:32:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-23 14:32:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 320 transitions. [2018-01-23 14:32:16,471 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 320 transitions. Word has length 120 [2018-01-23 14:32:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:16,471 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 320 transitions. [2018-01-23 14:32:16,472 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-23 14:32:16,472 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 320 transitions. [2018-01-23 14:32:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-01-23 14:32:16,473 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:16,473 INFO L322 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:16,474 INFO L371 AbstractCegarLoop]: === Iteration 16 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash -537809184, now seen corresponding path program 12 times [2018-01-23 14:32:16,474 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:16,474 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:16,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:16,475 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:16,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:16,503 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:16,773 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:16,773 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:16,781 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:32:16,812 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:16,839 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:16,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:17,041 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:17,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:18,410 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:19,466 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:20,687 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:21,637 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:23,011 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:27,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:39,561 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:48,811 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:32:48,814 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:48,824 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:48,898 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:48,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-01-23 14:32:48,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-23 14:32:48,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-23 14:32:48,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:32:48,899 INFO L87 Difference]: Start difference. First operand 304 states and 320 transitions. Second operand 16 states. [2018-01-23 14:32:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:48,973 INFO L93 Difference]: Finished difference Result 624 states and 661 transitions. [2018-01-23 14:32:48,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-23 14:32:48,974 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2018-01-23 14:32:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:48,976 INFO L225 Difference]: With dead ends: 624 [2018-01-23 14:32:48,976 INFO L226 Difference]: Without dead ends: 328 [2018-01-23 14:32:48,977 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:32:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-23 14:32:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 318. [2018-01-23 14:32:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-01-23 14:32:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 334 transitions. [2018-01-23 14:32:48,984 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 334 transitions. Word has length 127 [2018-01-23 14:32:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:48,985 INFO L432 AbstractCegarLoop]: Abstraction has 318 states and 334 transitions. [2018-01-23 14:32:48,985 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-23 14:32:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 334 transitions. [2018-01-23 14:32:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-23 14:32:48,986 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:48,986 INFO L322 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:48,986 INFO L371 AbstractCegarLoop]: === Iteration 17 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:48,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1468919897, now seen corresponding path program 13 times [2018-01-23 14:32:48,986 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:48,986 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:48,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:48,987 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:48,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:49,007 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:49,249 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:49,249 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:49,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:49,310 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:49,414 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:49,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-01-23 14:32:49,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-23 14:32:49,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-23 14:32:49,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-23 14:32:49,415 INFO L87 Difference]: Start difference. First operand 318 states and 334 transitions. Second operand 17 states. [2018-01-23 14:32:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:49,597 INFO L93 Difference]: Finished difference Result 652 states and 689 transitions. [2018-01-23 14:32:49,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-23 14:32:49,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2018-01-23 14:32:49,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:49,600 INFO L225 Difference]: With dead ends: 652 [2018-01-23 14:32:49,600 INFO L226 Difference]: Without dead ends: 342 [2018-01-23 14:32:49,601 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-23 14:32:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-23 14:32:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2018-01-23 14:32:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-23 14:32:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 348 transitions. [2018-01-23 14:32:49,610 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 348 transitions. Word has length 134 [2018-01-23 14:32:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:49,610 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 348 transitions. [2018-01-23 14:32:49,610 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-23 14:32:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 348 transitions. [2018-01-23 14:32:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-01-23 14:32:49,612 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:49,612 INFO L322 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:49,612 INFO L371 AbstractCegarLoop]: === Iteration 18 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1639660352, now seen corresponding path program 14 times [2018-01-23 14:32:49,612 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:49,612 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:49,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:49,613 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:49,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:49,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:49,844 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:49,844 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:49,848 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:32:49,873 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:49,907 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:32:49,913 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:32:49,918 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:49,972 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:32:49,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-01-23 14:32:49,973 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:32:49,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:32:49,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:32:49,973 INFO L87 Difference]: Start difference. First operand 332 states and 348 transitions. Second operand 18 states. [2018-01-23 14:32:50,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:50,045 INFO L93 Difference]: Finished difference Result 680 states and 717 transitions. [2018-01-23 14:32:50,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-23 14:32:50,048 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2018-01-23 14:32:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:50,050 INFO L225 Difference]: With dead ends: 680 [2018-01-23 14:32:50,051 INFO L226 Difference]: Without dead ends: 356 [2018-01-23 14:32:50,052 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:32:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-01-23 14:32:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 346. [2018-01-23 14:32:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-01-23 14:32:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 362 transitions. [2018-01-23 14:32:50,063 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 362 transitions. Word has length 141 [2018-01-23 14:32:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:50,063 INFO L432 AbstractCegarLoop]: Abstraction has 346 states and 362 transitions. [2018-01-23 14:32:50,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:32:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 362 transitions. [2018-01-23 14:32:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-23 14:32:50,065 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:50,065 INFO L322 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:50,065 INFO L371 AbstractCegarLoop]: === Iteration 19 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:32:50,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1013940615, now seen corresponding path program 15 times [2018-01-23 14:32:50,066 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:50,066 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:50,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:50,067 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:32:50,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:50,097 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:50,431 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:32:50,459 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:32:50,465 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:32:50,491 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:50,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:50,626 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:50,675 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:50,766 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:51,106 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:51,643 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:53,154 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:32:58,024 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:00,774 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:03,046 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Received shutdown request... [2018-01-23 14:33:09,413 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown