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_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:33:06,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:33:06,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:33:06,965 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:33:06,966 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:33:06,967 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:33:06,968 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:33:06,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:33:06,971 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:33:06,972 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:33:06,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:33:06,972 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:33:06,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:33:06,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:33:06,974 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:33:06,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:33:06,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:33:06,981 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:33:06,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:33:06,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:33:06,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-23 14:33:06,986 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-23 14:33:06,986 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-23 14:33:06,987 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-23 14:33:06,988 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-23 14:33:06,989 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-23 14:33:06,989 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-23 14:33:06,990 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-23 14:33:06,990 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-23 14:33:06,990 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:33:06,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:33:06,991 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 14:33:07,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:33:07,002 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:33:07,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:33:07,003 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:33:07,003 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:33:07,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:33:07,003 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:33:07,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:33:07,004 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:33:07,004 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:33:07,004 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:33:07,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:33:07,005 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:33:07,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:33:07,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:33:07,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:33:07,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:33:07,005 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:33:07,006 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:33:07,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:33:07,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:33:07,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:33:07,006 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:33:07,007 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:33:07,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:33:07,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:33:07,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:33:07,007 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:33:07,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:33:07,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:33:07,008 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:33:07,008 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:33:07,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:33:07,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:33:07,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:33:07,009 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:33:07,010 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:33:07,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:33:07,057 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:33:07,061 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:33:07,062 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:33:07,063 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:33:07,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i [2018-01-23 14:33:07,251 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:33:07,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:33:07,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:33:07,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:33:07,262 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:33:07,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeba7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07, skipping insertion in model container [2018-01-23 14:33:07,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,279 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:33:07,316 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:33:07,439 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:33:07,467 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:33:07,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07 WrapperNode [2018-01-23 14:33:07,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:33:07,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:33:07,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:33:07,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:33:07,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (1/1) ... [2018-01-23 14:33:07,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:33:07,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:33:07,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:33:07,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:33:07,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (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 14:33:07,574 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:33:07,574 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:33:07,574 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-23 14:33:07,574 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-23 14:33:07,574 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-23 14:33:07,575 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:33:07,575 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:33:07,575 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:33:07,575 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-23 14:33:07,575 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-23 14:33:07,575 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:33:07,575 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:33:07,576 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:33:07,576 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-23 14:33:07,576 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-23 14:33:07,576 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:33:07,576 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-23 14:33:07,576 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-23 14:33:07,577 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-23 14:33:07,577 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:33:07,577 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:33:07,577 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:33:08,035 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:33:08,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:33:08 BoogieIcfgContainer [2018-01-23 14:33:08,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:33:08,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:33:08,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:33:08,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:33:08,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:33:07" (1/3) ... [2018-01-23 14:33:08,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb6bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:33:08, skipping insertion in model container [2018-01-23 14:33:08,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:33:07" (2/3) ... [2018-01-23 14:33:08,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb6bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:33:08, skipping insertion in model container [2018-01-23 14:33:08,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:33:08" (3/3) ... [2018-01-23 14:33:08,044 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01_true-valid-memsafety.i [2018-01-23 14:33:08,053 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:33:08,062 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-23 14:33:08,112 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:33:08,112 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:33:08,112 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:33:08,112 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:33:08,113 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:33:08,113 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:33:08,113 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:33:08,113 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-23 14:33:08,114 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:33:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-23 14:33:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-23 14:33:08,145 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:08,147 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 14:33:08,147 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1561242995, now seen corresponding path program 1 times [2018-01-23 14:33:08,154 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:08,155 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:08,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,212 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:08,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:08,292 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:08,368 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 14:33:08,372 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:33:08,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:33:08,374 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:33:08,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:33:08,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:33:08,463 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2018-01-23 14:33:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:08,506 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2018-01-23 14:33:08,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:33:08,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-23 14:33:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:08,517 INFO L225 Difference]: With dead ends: 248 [2018-01-23 14:33:08,518 INFO L226 Difference]: Without dead ends: 96 [2018-01-23 14:33:08,522 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 14:33:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-23 14:33:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-01-23 14:33:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-23 14:33:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-23 14:33:08,563 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 25 [2018-01-23 14:33:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:08,563 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-23 14:33:08,564 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:33:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-23 14:33:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:33:08,566 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:08,566 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 14:33:08,566 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1948874992, now seen corresponding path program 1 times [2018-01-23 14:33:08,567 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:08,567 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:08,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,568 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:08,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:08,592 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:08,677 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 14:33:08,677 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:33:08,677 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:33:08,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:33:08,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:33:08,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:33:08,679 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 4 states. [2018-01-23 14:33:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:08,738 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-23 14:33:08,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:33:08,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-23 14:33:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:08,740 INFO L225 Difference]: With dead ends: 234 [2018-01-23 14:33:08,740 INFO L226 Difference]: Without dead ends: 146 [2018-01-23 14:33:08,742 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 14:33:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-23 14:33:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-01-23 14:33:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-23 14:33:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2018-01-23 14:33:08,751 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 27 [2018-01-23 14:33:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:08,751 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2018-01-23 14:33:08,751 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:33:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2018-01-23 14:33:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:33:08,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:08,752 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 14:33:08,752 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash -245124692, now seen corresponding path program 1 times [2018-01-23 14:33:08,753 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:08,753 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:08,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:08,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:08,777 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:08,807 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 14:33:08,807 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:33:08,807 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:33:08,808 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:33:08,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:33:08,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:33:08,809 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 3 states. [2018-01-23 14:33:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:08,851 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2018-01-23 14:33:08,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:33:08,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-23 14:33:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:08,854 INFO L225 Difference]: With dead ends: 147 [2018-01-23 14:33:08,854 INFO L226 Difference]: Without dead ends: 146 [2018-01-23 14:33:08,855 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 14:33:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-23 14:33:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-23 14:33:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-23 14:33:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2018-01-23 14:33:08,867 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 29 [2018-01-23 14:33:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:08,868 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2018-01-23 14:33:08,868 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:33:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2018-01-23 14:33:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-23 14:33:08,870 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:08,870 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 14:33:08,870 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:08,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1224197024, now seen corresponding path program 1 times [2018-01-23 14:33:08,871 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:08,871 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:08,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,872 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:08,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:08,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:08,945 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 14:33:08,945 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:33:08,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:33:08,945 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:33:08,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:33:08,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:33:08,946 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 3 states. [2018-01-23 14:33:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:08,967 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2018-01-23 14:33:08,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:33:08,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-01-23 14:33:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:08,969 INFO L225 Difference]: With dead ends: 298 [2018-01-23 14:33:08,969 INFO L226 Difference]: Without dead ends: 160 [2018-01-23 14:33:08,970 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 14:33:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-23 14:33:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-01-23 14:33:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-23 14:33:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-23 14:33:08,982 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 43 [2018-01-23 14:33:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:08,982 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-23 14:33:08,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:33:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-23 14:33:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-23 14:33:08,984 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:08,984 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 14:33:08,984 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1546322841, now seen corresponding path program 1 times [2018-01-23 14:33:08,985 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:08,985 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:08,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:08,985 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:08,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:09,013 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:09,076 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 14:33:09,076 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:09,076 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 14:33:09,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:09,144 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:09,176 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 14:33:09,197 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:09,197 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-01-23 14:33:09,197 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:33:09,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:33:09,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:33:09,198 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand 5 states. [2018-01-23 14:33:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:09,228 INFO L93 Difference]: Finished difference Result 316 states and 353 transitions. [2018-01-23 14:33:09,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:33:09,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-01-23 14:33:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:09,229 INFO L225 Difference]: With dead ends: 316 [2018-01-23 14:33:09,230 INFO L226 Difference]: Without dead ends: 174 [2018-01-23 14:33:09,230 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 14:33:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-23 14:33:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2018-01-23 14:33:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-23 14:33:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2018-01-23 14:33:09,241 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 50 [2018-01-23 14:33:09,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:09,242 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2018-01-23 14:33:09,242 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:33:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2018-01-23 14:33:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-23 14:33:09,244 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:09,244 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 14:33:09,245 INFO L371 AbstractCegarLoop]: === Iteration 6 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1302825344, now seen corresponding path program 2 times [2018-01-23 14:33:09,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:09,245 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:09,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:09,246 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:09,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:09,274 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:09,362 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 14:33:09,363 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:09,363 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 14:33:09,373 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:33:09,408 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:09,436 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:09,438 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:09,442 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:09,459 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 14:33:09,493 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:09,493 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-23 14:33:09,493 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:33:09,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:33:09,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:33:09,494 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand 6 states. [2018-01-23 14:33:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:09,542 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2018-01-23 14:33:09,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:33:09,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-01-23 14:33:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:09,544 INFO L225 Difference]: With dead ends: 344 [2018-01-23 14:33:09,544 INFO L226 Difference]: Without dead ends: 188 [2018-01-23 14:33:09,545 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 14:33:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-23 14:33:09,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2018-01-23 14:33:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-23 14:33:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2018-01-23 14:33:09,557 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 57 [2018-01-23 14:33:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:09,557 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2018-01-23 14:33:09,557 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:33:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2018-01-23 14:33:09,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-01-23 14:33:09,560 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:09,560 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 14:33:09,560 INFO L371 AbstractCegarLoop]: === Iteration 7 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:09,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1322589767, now seen corresponding path program 3 times [2018-01-23 14:33:09,561 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:09,561 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:09,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:09,562 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:09,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:09,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:09,696 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 14:33:09,696 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:09,696 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 14:33:09,704 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:33:09,739 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:09,766 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:09,858 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:09,901 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:09,902 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:09,906 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:09,926 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 14:33:09,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:09,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-01-23 14:33:09,947 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:33:09,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:33:09,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:33:09,948 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 7 states. [2018-01-23 14:33:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:10,025 INFO L93 Difference]: Finished difference Result 372 states and 409 transitions. [2018-01-23 14:33:10,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-23 14:33:10,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-01-23 14:33:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:10,028 INFO L225 Difference]: With dead ends: 372 [2018-01-23 14:33:10,028 INFO L226 Difference]: Without dead ends: 202 [2018-01-23 14:33:10,032 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 14:33:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-23 14:33:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2018-01-23 14:33:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-23 14:33:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 208 transitions. [2018-01-23 14:33:10,048 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 208 transitions. Word has length 64 [2018-01-23 14:33:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:10,048 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 208 transitions. [2018-01-23 14:33:10,049 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:33:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 208 transitions. [2018-01-23 14:33:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-23 14:33:10,051 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:10,051 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 14:33:10,051 INFO L371 AbstractCegarLoop]: === Iteration 8 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:10,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1826064224, now seen corresponding path program 4 times [2018-01-23 14:33:10,054 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:10,054 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:10,055 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:10,055 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:10,055 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:10,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:10,175 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 14:33:10,175 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:10,175 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 14:33:10,186 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:33:10,444 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:10,449 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:10,472 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 14:33:10,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:10,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-01-23 14:33:10,494 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-23 14:33:10,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-23 14:33:10,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-23 14:33:10,495 INFO L87 Difference]: Start difference. First operand 192 states and 208 transitions. Second operand 8 states. [2018-01-23 14:33:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:10,602 INFO L93 Difference]: Finished difference Result 400 states and 437 transitions. [2018-01-23 14:33:10,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:33:10,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2018-01-23 14:33:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:10,624 INFO L225 Difference]: With dead ends: 400 [2018-01-23 14:33:10,624 INFO L226 Difference]: Without dead ends: 216 [2018-01-23 14:33:10,625 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 14:33:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-23 14:33:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2018-01-23 14:33:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-23 14:33:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2018-01-23 14:33:10,632 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 71 [2018-01-23 14:33:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:10,632 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2018-01-23 14:33:10,632 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-23 14:33:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2018-01-23 14:33:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-23 14:33:10,633 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:10,633 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 14:33:10,634 INFO L371 AbstractCegarLoop]: === Iteration 9 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1568376793, now seen corresponding path program 5 times [2018-01-23 14:33:10,634 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:10,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:10,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:10,635 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:10,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:10,655 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:10,773 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 14:33:10,773 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:10,773 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 14:33:10,783 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:33:10,800 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:10,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:10,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:10,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:10,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:10,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:10,872 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:10,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:10,953 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 14:33:10,975 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:10,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-01-23 14:33:10,976 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:33:10,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:33:10,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:33:10,976 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 9 states. [2018-01-23 14:33:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:11,041 INFO L93 Difference]: Finished difference Result 428 states and 465 transitions. [2018-01-23 14:33:11,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:33:11,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2018-01-23 14:33:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:11,043 INFO L225 Difference]: With dead ends: 428 [2018-01-23 14:33:11,043 INFO L226 Difference]: Without dead ends: 230 [2018-01-23 14:33:11,044 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:33:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-23 14:33:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2018-01-23 14:33:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-23 14:33:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 236 transitions. [2018-01-23 14:33:11,060 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 236 transitions. Word has length 78 [2018-01-23 14:33:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:11,061 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 236 transitions. [2018-01-23 14:33:11,062 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:33:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 236 transitions. [2018-01-23 14:33:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-01-23 14:33:11,063 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:11,063 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 14:33:11,063 INFO L371 AbstractCegarLoop]: === Iteration 10 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586944, now seen corresponding path program 6 times [2018-01-23 14:33:11,064 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:11,064 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:11,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:11,064 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:11,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:11,086 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:11,198 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 14:33:11,199 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:11,199 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 14:33:11,204 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:33:11,231 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:11,256 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:11,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:11,350 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:11,513 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:11,879 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:12,498 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:12,500 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:12,504 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:12,529 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 14:33:12,551 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:12,552 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-01-23 14:33:12,552 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:33:12,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:33:12,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:33:12,552 INFO L87 Difference]: Start difference. First operand 220 states and 236 transitions. Second operand 10 states. [2018-01-23 14:33:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:12,619 INFO L93 Difference]: Finished difference Result 456 states and 493 transitions. [2018-01-23 14:33:12,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-23 14:33:12,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-01-23 14:33:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:12,622 INFO L225 Difference]: With dead ends: 456 [2018-01-23 14:33:12,622 INFO L226 Difference]: Without dead ends: 244 [2018-01-23 14:33:12,623 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 14:33:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-23 14:33:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2018-01-23 14:33:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-23 14:33:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 250 transitions. [2018-01-23 14:33:12,633 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 250 transitions. Word has length 85 [2018-01-23 14:33:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:12,634 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 250 transitions. [2018-01-23 14:33:12,634 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:33:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 250 transitions. [2018-01-23 14:33:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-23 14:33:12,635 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:12,636 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 14:33:12,636 INFO L371 AbstractCegarLoop]: === Iteration 11 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:12,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1071712775, now seen corresponding path program 7 times [2018-01-23 14:33:12,636 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:12,636 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:12,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:12,637 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:12,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:12,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:12,778 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 14:33:12,779 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:12,779 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 14:33:12,789 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:12,843 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:12,864 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 14:33:12,891 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:12,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-01-23 14:33:12,892 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-23 14:33:12,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-23 14:33:12,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-23 14:33:12,893 INFO L87 Difference]: Start difference. First operand 234 states and 250 transitions. Second operand 11 states. [2018-01-23 14:33:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:12,957 INFO L93 Difference]: Finished difference Result 484 states and 521 transitions. [2018-01-23 14:33:12,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:33:12,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2018-01-23 14:33:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:12,959 INFO L225 Difference]: With dead ends: 484 [2018-01-23 14:33:12,959 INFO L226 Difference]: Without dead ends: 258 [2018-01-23 14:33:12,960 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 14:33:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-23 14:33:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2018-01-23 14:33:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-01-23 14:33:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 264 transitions. [2018-01-23 14:33:12,967 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 264 transitions. Word has length 92 [2018-01-23 14:33:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:12,968 INFO L432 AbstractCegarLoop]: Abstraction has 248 states and 264 transitions. [2018-01-23 14:33:12,968 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-23 14:33:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 264 transitions. [2018-01-23 14:33:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-23 14:33:12,969 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:12,969 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 14:33:12,969 INFO L371 AbstractCegarLoop]: === Iteration 12 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash -214947040, now seen corresponding path program 8 times [2018-01-23 14:33:12,969 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:12,969 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:12,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:12,970 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:12,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:12,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:13,329 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 14:33:13,329 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:13,329 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 14:33:13,343 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:33:13,366 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:13,392 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:13,405 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:13,408 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:13,460 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 14:33:13,480 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:13,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-01-23 14:33:13,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:33:13,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:33:13,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:33:13,481 INFO L87 Difference]: Start difference. First operand 248 states and 264 transitions. Second operand 12 states. [2018-01-23 14:33:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:13,608 INFO L93 Difference]: Finished difference Result 512 states and 549 transitions. [2018-01-23 14:33:13,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-23 14:33:13,608 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-01-23 14:33:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:13,609 INFO L225 Difference]: With dead ends: 512 [2018-01-23 14:33:13,609 INFO L226 Difference]: Without dead ends: 272 [2018-01-23 14:33:13,610 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:33:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-23 14:33:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2018-01-23 14:33:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-01-23 14:33:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 278 transitions. [2018-01-23 14:33:13,619 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 278 transitions. Word has length 99 [2018-01-23 14:33:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:13,619 INFO L432 AbstractCegarLoop]: Abstraction has 262 states and 278 transitions. [2018-01-23 14:33:13,619 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:33:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 278 transitions. [2018-01-23 14:33:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-23 14:33:13,620 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:13,620 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 14:33:13,620 INFO L371 AbstractCegarLoop]: === Iteration 13 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash -862508007, now seen corresponding path program 9 times [2018-01-23 14:33:13,621 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:13,621 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:13,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:13,622 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:13,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:13,640 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:13,766 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 14:33:13,766 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:13,766 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 14:33:13,772 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:33:13,793 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:13,811 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:13,865 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:13,922 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:14,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:14,212 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:14,493 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:15,382 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:16,397 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:19,063 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:19,065 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:19,070 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:19,090 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 14:33:19,115 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:19,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-01-23 14:33:19,115 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-23 14:33:19,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-23 14:33:19,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:33:19,116 INFO L87 Difference]: Start difference. First operand 262 states and 278 transitions. Second operand 13 states. [2018-01-23 14:33:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:19,218 INFO L93 Difference]: Finished difference Result 540 states and 577 transitions. [2018-01-23 14:33:19,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-23 14:33:19,219 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2018-01-23 14:33:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:19,221 INFO L225 Difference]: With dead ends: 540 [2018-01-23 14:33:19,221 INFO L226 Difference]: Without dead ends: 286 [2018-01-23 14:33:19,222 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:33:19,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-23 14:33:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 276. [2018-01-23 14:33:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-01-23 14:33:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 292 transitions. [2018-01-23 14:33:19,235 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 292 transitions. Word has length 106 [2018-01-23 14:33:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:19,235 INFO L432 AbstractCegarLoop]: Abstraction has 276 states and 292 transitions. [2018-01-23 14:33:19,235 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-23 14:33:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 292 transitions. [2018-01-23 14:33:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-23 14:33:19,237 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:19,237 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 14:33:19,237 INFO L371 AbstractCegarLoop]: === Iteration 14 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash -346763008, now seen corresponding path program 10 times [2018-01-23 14:33:19,237 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:19,238 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:19,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:19,239 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:19,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:19,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:19,507 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 14:33:19,508 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:19,508 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 14:33:19,519 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:33:21,422 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:21,426 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:21,460 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 14:33:21,483 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:21,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-01-23 14:33:21,484 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-23 14:33:21,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-23 14:33:21,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:33:21,484 INFO L87 Difference]: Start difference. First operand 276 states and 292 transitions. Second operand 14 states. [2018-01-23 14:33:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:21,537 INFO L93 Difference]: Finished difference Result 568 states and 605 transitions. [2018-01-23 14:33:21,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-23 14:33:21,538 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 113 [2018-01-23 14:33:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:21,540 INFO L225 Difference]: With dead ends: 568 [2018-01-23 14:33:21,540 INFO L226 Difference]: Without dead ends: 300 [2018-01-23 14:33:21,541 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:33:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-23 14:33:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2018-01-23 14:33:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-01-23 14:33:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 306 transitions. [2018-01-23 14:33:21,553 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 306 transitions. Word has length 113 [2018-01-23 14:33:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:21,553 INFO L432 AbstractCegarLoop]: Abstraction has 290 states and 306 transitions. [2018-01-23 14:33:21,553 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-23 14:33:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 306 transitions. [2018-01-23 14:33:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-23 14:33:21,555 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:21,555 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 14:33:21,555 INFO L371 AbstractCegarLoop]: === Iteration 15 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash 719727161, now seen corresponding path program 11 times [2018-01-23 14:33:21,556 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:21,556 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:21,557 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:21,557 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:21,557 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:21,586 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:21,774 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 14:33:21,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:21,774 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 14:33:21,782 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:33:21,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,819 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,827 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,905 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:21,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:22,218 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:22,400 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:22,687 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:22,690 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:22,695 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:22,745 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 14:33:22,767 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:22,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-01-23 14:33:22,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-23 14:33:22,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-23 14:33:22,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-23 14:33:22,768 INFO L87 Difference]: Start difference. First operand 290 states and 306 transitions. Second operand 15 states. [2018-01-23 14:33:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:22,844 INFO L93 Difference]: Finished difference Result 596 states and 633 transitions. [2018-01-23 14:33:22,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:33:22,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 120 [2018-01-23 14:33:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:22,847 INFO L225 Difference]: With dead ends: 596 [2018-01-23 14:33:22,847 INFO L226 Difference]: Without dead ends: 314 [2018-01-23 14:33:22,848 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 14:33:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-01-23 14:33:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 304. [2018-01-23 14:33:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-23 14:33:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 320 transitions. [2018-01-23 14:33:22,857 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 320 transitions. Word has length 120 [2018-01-23 14:33:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:22,857 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 320 transitions. [2018-01-23 14:33:22,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-23 14:33:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 320 transitions. [2018-01-23 14:33:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-01-23 14:33:22,858 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:22,858 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 14:33:22,858 INFO L371 AbstractCegarLoop]: === Iteration 16 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:22,858 INFO L82 PathProgramCache]: Analyzing trace with hash -537809184, now seen corresponding path program 12 times [2018-01-23 14:33:22,858 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:22,859 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:22,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:22,859 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:22,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:22,880 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:23,145 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 14:33:23,146 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:23,146 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 14:33:23,151 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:33:23,172 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:23,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:23,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:23,258 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:23,474 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:23,573 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:25,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:28,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:30,526 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:33,150 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:37,576 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:42,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:51,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:33:51,545 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:51,555 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:51,595 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 14:33:51,623 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:51,623 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-01-23 14:33:51,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-23 14:33:51,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-23 14:33:51,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:33:51,624 INFO L87 Difference]: Start difference. First operand 304 states and 320 transitions. Second operand 16 states. [2018-01-23 14:33:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:51,674 INFO L93 Difference]: Finished difference Result 624 states and 661 transitions. [2018-01-23 14:33:51,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-23 14:33:51,675 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2018-01-23 14:33:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:51,676 INFO L225 Difference]: With dead ends: 624 [2018-01-23 14:33:51,677 INFO L226 Difference]: Without dead ends: 328 [2018-01-23 14:33:51,678 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:33:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-23 14:33:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 318. [2018-01-23 14:33:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-01-23 14:33:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 334 transitions. [2018-01-23 14:33:51,690 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 334 transitions. Word has length 127 [2018-01-23 14:33:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:51,690 INFO L432 AbstractCegarLoop]: Abstraction has 318 states and 334 transitions. [2018-01-23 14:33:51,690 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-23 14:33:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 334 transitions. [2018-01-23 14:33:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-23 14:33:51,692 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:51,692 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 14:33:51,692 INFO L371 AbstractCegarLoop]: === Iteration 17 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1468919897, now seen corresponding path program 13 times [2018-01-23 14:33:51,693 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:51,693 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:51,693 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:51,694 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:51,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:51,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:52,000 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 14:33:52,000 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:52,000 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 14:33:52,006 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:52,059 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:52,120 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 14:33:52,141 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:52,142 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-01-23 14:33:52,142 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-23 14:33:52,142 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-23 14:33:52,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-23 14:33:52,143 INFO L87 Difference]: Start difference. First operand 318 states and 334 transitions. Second operand 17 states. [2018-01-23 14:33:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:52,392 INFO L93 Difference]: Finished difference Result 652 states and 689 transitions. [2018-01-23 14:33:52,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-23 14:33:52,392 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2018-01-23 14:33:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:52,394 INFO L225 Difference]: With dead ends: 652 [2018-01-23 14:33:52,394 INFO L226 Difference]: Without dead ends: 342 [2018-01-23 14:33:52,395 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-23 14:33:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-23 14:33:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2018-01-23 14:33:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-23 14:33:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 348 transitions. [2018-01-23 14:33:52,403 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 348 transitions. Word has length 134 [2018-01-23 14:33:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:52,404 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 348 transitions. [2018-01-23 14:33:52,404 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-23 14:33:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 348 transitions. [2018-01-23 14:33:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-01-23 14:33:52,405 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:52,405 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 14:33:52,405 INFO L371 AbstractCegarLoop]: === Iteration 18 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1639660352, now seen corresponding path program 14 times [2018-01-23 14:33:52,405 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:52,405 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:52,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:52,406 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:33:52,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:52,426 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:52,833 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 14:33:52,833 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:52,833 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 14:33:52,838 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:33:52,866 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:52,895 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:33:52,906 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:33:52,910 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:33:52,966 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 14:33:53,001 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:33:53,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-01-23 14:33:53,002 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:33:53,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:33:53,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:33:53,002 INFO L87 Difference]: Start difference. First operand 332 states and 348 transitions. Second operand 18 states. [2018-01-23 14:33:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:33:53,107 INFO L93 Difference]: Finished difference Result 680 states and 717 transitions. [2018-01-23 14:33:53,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-23 14:33:53,107 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2018-01-23 14:33:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:33:53,108 INFO L225 Difference]: With dead ends: 680 [2018-01-23 14:33:53,108 INFO L226 Difference]: Without dead ends: 356 [2018-01-23 14:33:53,109 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:33:53,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-01-23 14:33:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 346. [2018-01-23 14:33:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-01-23 14:33:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 362 transitions. [2018-01-23 14:33:53,119 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 362 transitions. Word has length 141 [2018-01-23 14:33:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:33:53,120 INFO L432 AbstractCegarLoop]: Abstraction has 346 states and 362 transitions. [2018-01-23 14:33:53,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:33:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 362 transitions. [2018-01-23 14:33:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-23 14:33:53,121 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:33:53,122 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 14:33:53,122 INFO L371 AbstractCegarLoop]: === Iteration 19 === [create_dataErr0EnsuresViolation]=== [2018-01-23 14:33:53,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1013940615, now seen corresponding path program 15 times [2018-01-23 14:33:53,122 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:33:53,122 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:33:53,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:53,123 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:33:53,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:33:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:33:53,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:33:53,428 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 14:33:53,428 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:33:53,428 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 14:33:53,437 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:33:53,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:53,497 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:53,572 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:53,632 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:53,733 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:53,908 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:54,224 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:54,545 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:54,794 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:54,937 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:55,357 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:33:57,712 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:34:00,154 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:34:12,166 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown