java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_init9_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:18:50,956 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:18:50,958 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:18:50,970 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:18:50,970 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:18:50,972 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:18:50,973 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:18:50,975 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:18:50,977 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:18:50,978 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:18:50,979 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:18:50,979 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:18:50,980 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:18:50,981 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:18:50,983 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:18:50,983 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:18:50,984 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:18:50,986 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:18:50,989 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:18:50,991 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:18:50,992 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:18:50,993 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:18:50,996 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:18:50,996 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:18:50,996 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:18:50,997 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:18:50,998 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:18:50,999 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:18:50,999 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:18:51,000 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:18:51,001 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:18:51,002 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:18:51,003 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:18:51,003 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:18:51,004 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:18:51,004 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:18:51,004 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:18:51,005 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:18:51,006 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:18:51,006 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:18:51,034 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:18:51,034 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:18:51,036 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:18:51,037 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:18:51,037 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:18:51,037 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:18:51,037 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:18:51,038 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:18:51,038 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:18:51,038 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:18:51,038 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:18:51,038 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:18:51,039 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:18:51,040 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:18:51,040 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:18:51,040 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:18:51,041 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:18:51,041 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:18:51,041 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:18:51,041 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:18:51,041 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:18:51,042 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:18:51,042 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:18:51,042 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:18:51,043 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:18:51,043 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:18:51,043 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:18:51,043 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:18:51,043 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:18:51,096 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:18:51,112 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:18:51,116 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:18:51,118 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:18:51,118 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:18:51,119 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init9_true-unreach-call_ground.i [2019-05-23 11:18:51,178 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24586500a/0a3d03345ff24be7bba58a53a9fc3a2e/FLAG6d4240129 [2019-05-23 11:18:51,590 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:18:51,591 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init9_true-unreach-call_ground.i [2019-05-23 11:18:51,597 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24586500a/0a3d03345ff24be7bba58a53a9fc3a2e/FLAG6d4240129 [2019-05-23 11:18:51,966 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24586500a/0a3d03345ff24be7bba58a53a9fc3a2e [2019-05-23 11:18:51,976 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:18:51,978 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:18:51,979 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:18:51,979 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:18:51,983 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:18:51,984 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:18:51" (1/1) ... [2019-05-23 11:18:51,987 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6b2ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:51, skipping insertion in model container [2019-05-23 11:18:51,987 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:18:51" (1/1) ... [2019-05-23 11:18:51,995 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:18:52,020 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:18:52,250 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:18:52,255 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:18:52,283 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:18:52,304 INFO L146 ILogger]: Completed translation [2019-05-23 11:18:52,305 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52 WrapperNode [2019-05-23 11:18:52,305 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:18:52,306 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:18:52,306 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:18:52,306 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:18:52,315 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,323 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,345 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:18:52,346 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:18:52,346 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:18:52,346 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:18:52,353 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,353 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,355 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,356 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,362 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,370 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,372 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... [2019-05-23 11:18:52,374 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:18:52,375 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:18:52,375 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:18:52,375 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:18:52,376 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:18:52,536 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:18:52,537 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:18:52,537 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:18:52,537 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:18:52,537 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:18:52,537 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:18:53,058 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:18:53,059 INFO L146 ILogger]: Removed 16 assume(true) statements. [2019-05-23 11:18:53,060 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:18:53 BoogieIcfgContainer [2019-05-23 11:18:53,060 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:18:53,061 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:18:53,061 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:18:53,064 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:18:53,065 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:18:51" (1/3) ... [2019-05-23 11:18:53,066 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a6aa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:18:53, skipping insertion in model container [2019-05-23 11:18:53,066 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:52" (2/3) ... [2019-05-23 11:18:53,066 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a6aa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:18:53, skipping insertion in model container [2019-05-23 11:18:53,066 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:18:53" (3/3) ... [2019-05-23 11:18:53,068 INFO L146 ILogger]: Analyzing ICFG standard_init9_true-unreach-call_ground.i [2019-05-23 11:18:53,078 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:18:53,090 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:18:53,107 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:18:53,137 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:18:53,137 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:18:53,138 INFO L146 ILogger]: Hoare is true [2019-05-23 11:18:53,138 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:18:53,139 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:18:53,139 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:18:53,139 INFO L146 ILogger]: Difference is false [2019-05-23 11:18:53,140 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:18:53,140 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:18:53,156 INFO L146 ILogger]: Start isEmpty. Operand 61 states. [2019-05-23 11:18:53,164 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:18:53,164 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:53,165 INFO L146 ILogger]: 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] [2019-05-23 11:18:53,167 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:53,171 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:53,172 INFO L146 ILogger]: Analyzing trace with hash -2080952448, now seen corresponding path program 1 times [2019-05-23 11:18:53,173 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:53,173 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:53,215 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:53,215 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:53,215 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:53,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:53,293 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:18:53,296 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:18:53,298 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:18:53,302 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:18:53,315 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:18:53,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:18:53,319 INFO L146 ILogger]: Start difference. First operand 61 states. Second operand 2 states. [2019-05-23 11:18:53,342 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:53,342 INFO L146 ILogger]: Finished difference Result 113 states and 151 transitions. [2019-05-23 11:18:53,342 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:18:53,344 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 32 [2019-05-23 11:18:53,344 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:53,354 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:18:53,354 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:18:53,358 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:18:53,372 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:18:53,388 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-05-23 11:18:53,389 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:18:53,391 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2019-05-23 11:18:53,393 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 32 [2019-05-23 11:18:53,393 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:53,393 INFO L146 ILogger]: Abstraction has 55 states and 64 transitions. [2019-05-23 11:18:53,393 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:18:53,394 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 64 transitions. [2019-05-23 11:18:53,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:18:53,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:53,395 INFO L146 ILogger]: 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] [2019-05-23 11:18:53,396 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:53,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:53,396 INFO L146 ILogger]: Analyzing trace with hash -68649576, now seen corresponding path program 1 times [2019-05-23 11:18:53,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:53,397 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:53,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:53,398 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:53,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:53,410 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:53,498 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:18:53,498 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:18:53,499 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:18:53,500 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:18:53,501 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:18:53,501 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:18:53,502 INFO L146 ILogger]: Start difference. First operand 55 states and 64 transitions. Second operand 3 states. [2019-05-23 11:18:54,157 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:54,158 INFO L146 ILogger]: Finished difference Result 128 states and 154 transitions. [2019-05-23 11:18:54,158 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:18:54,158 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 32 [2019-05-23 11:18:54,159 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:54,160 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:18:54,161 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:18:54,162 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:18:54,163 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:18:54,170 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 64. [2019-05-23 11:18:54,171 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:18:54,172 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2019-05-23 11:18:54,172 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 32 [2019-05-23 11:18:54,173 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:54,173 INFO L146 ILogger]: Abstraction has 64 states and 73 transitions. [2019-05-23 11:18:54,173 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:18:54,173 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 73 transitions. [2019-05-23 11:18:54,175 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:18:54,175 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:54,176 INFO L146 ILogger]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:54,176 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:54,176 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:54,176 INFO L146 ILogger]: Analyzing trace with hash 186587740, now seen corresponding path program 1 times [2019-05-23 11:18:54,177 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:54,177 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:54,178 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:54,178 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:54,178 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:54,223 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:54,284 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:18:54,285 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:54,285 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:18:54,302 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:54,339 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:54,341 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:18:54,349 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:54,420 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:18:54,445 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:54,445 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:18:54,446 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:18:54,446 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:18:54,448 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:18:54,448 INFO L146 ILogger]: Start difference. First operand 64 states and 73 transitions. Second operand 5 states. [2019-05-23 11:18:55,082 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:55,082 INFO L146 ILogger]: Finished difference Result 163 states and 189 transitions. [2019-05-23 11:18:55,086 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:18:55,087 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 59 [2019-05-23 11:18:55,087 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:55,091 INFO L146 ILogger]: With dead ends: 163 [2019-05-23 11:18:55,092 INFO L146 ILogger]: Without dead ends: 109 [2019-05-23 11:18:55,093 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:18:55,093 INFO L146 ILogger]: Start minimizeSevpa. Operand 109 states. [2019-05-23 11:18:55,105 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 109 to 91. [2019-05-23 11:18:55,110 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:18:55,112 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2019-05-23 11:18:55,112 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 59 [2019-05-23 11:18:55,112 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:55,112 INFO L146 ILogger]: Abstraction has 91 states and 100 transitions. [2019-05-23 11:18:55,112 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:18:55,113 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 100 transitions. [2019-05-23 11:18:55,116 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:18:55,116 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:55,117 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:55,117 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:55,117 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:55,118 INFO L146 ILogger]: Analyzing trace with hash -1502760168, now seen corresponding path program 2 times [2019-05-23 11:18:55,118 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:55,118 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:55,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:55,122 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:55,122 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:55,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:55,322 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:18:55,323 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:55,323 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:18:55,335 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:55,385 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:55,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:55,386 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:18:55,393 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:55,440 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:18:55,459 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:55,459 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:18:55,460 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:18:55,460 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:18:55,463 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:18:55,463 INFO L146 ILogger]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2019-05-23 11:18:55,913 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:55,913 INFO L146 ILogger]: Finished difference Result 214 states and 240 transitions. [2019-05-23 11:18:55,916 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:18:55,916 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 86 [2019-05-23 11:18:55,916 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:55,918 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:18:55,918 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:18:55,921 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:18:55,921 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:18:55,937 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 118. [2019-05-23 11:18:55,937 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:18:55,940 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2019-05-23 11:18:55,940 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 86 [2019-05-23 11:18:55,943 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:55,943 INFO L146 ILogger]: Abstraction has 118 states and 127 transitions. [2019-05-23 11:18:55,944 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:18:55,944 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 127 transitions. [2019-05-23 11:18:55,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:18:55,946 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:55,946 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:55,946 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:55,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:55,947 INFO L146 ILogger]: Analyzing trace with hash -1851939364, now seen corresponding path program 3 times [2019-05-23 11:18:55,948 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:55,948 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:55,949 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:55,949 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:55,949 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:56,025 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:56,131 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:18:56,131 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:56,132 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:18:56,142 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:56,429 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:18:56,429 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:56,432 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:18:56,437 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:56,477 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:18:56,497 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:56,497 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:18:56,497 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:18:56,498 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:18:56,498 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:18:56,498 INFO L146 ILogger]: Start difference. First operand 118 states and 127 transitions. Second operand 7 states. [2019-05-23 11:18:57,177 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:57,177 INFO L146 ILogger]: Finished difference Result 265 states and 291 transitions. [2019-05-23 11:18:57,178 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:18:57,178 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 113 [2019-05-23 11:18:57,178 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:57,179 INFO L146 ILogger]: With dead ends: 265 [2019-05-23 11:18:57,179 INFO L146 ILogger]: Without dead ends: 163 [2019-05-23 11:18:57,180 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:18:57,181 INFO L146 ILogger]: Start minimizeSevpa. Operand 163 states. [2019-05-23 11:18:57,190 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 163 to 145. [2019-05-23 11:18:57,191 INFO L146 ILogger]: Start removeUnreachable. Operand 145 states. [2019-05-23 11:18:57,192 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2019-05-23 11:18:57,192 INFO L146 ILogger]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 113 [2019-05-23 11:18:57,193 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:57,193 INFO L146 ILogger]: Abstraction has 145 states and 154 transitions. [2019-05-23 11:18:57,193 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:18:57,193 INFO L146 ILogger]: Start isEmpty. Operand 145 states and 154 transitions. [2019-05-23 11:18:57,195 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:18:57,195 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:57,196 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:57,196 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:57,196 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:57,197 INFO L146 ILogger]: Analyzing trace with hash -869922664, now seen corresponding path program 4 times [2019-05-23 11:18:57,197 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:57,197 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:57,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:57,198 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:57,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:57,246 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:57,384 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:18:57,385 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:57,385 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:18:57,398 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:57,465 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:57,465 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:57,467 INFO L146 ILogger]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:57,477 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:57,629 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:18:57,679 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:57,679 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:18:57,680 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:18:57,680 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:18:57,681 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:18:57,681 INFO L146 ILogger]: Start difference. First operand 145 states and 154 transitions. Second operand 8 states. [2019-05-23 11:18:58,178 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:58,178 INFO L146 ILogger]: Finished difference Result 316 states and 342 transitions. [2019-05-23 11:18:58,179 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:18:58,179 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 140 [2019-05-23 11:18:58,179 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:58,180 INFO L146 ILogger]: With dead ends: 316 [2019-05-23 11:18:58,181 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:18:58,182 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:18:58,183 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:18:58,195 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 172. [2019-05-23 11:18:58,195 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:18:58,196 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2019-05-23 11:18:58,197 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 140 [2019-05-23 11:18:58,197 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:58,197 INFO L146 ILogger]: Abstraction has 172 states and 181 transitions. [2019-05-23 11:18:58,197 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:18:58,197 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 181 transitions. [2019-05-23 11:18:58,200 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:18:58,200 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:58,200 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:58,201 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:58,201 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:58,201 INFO L146 ILogger]: Analyzing trace with hash -166948516, now seen corresponding path program 5 times [2019-05-23 11:18:58,202 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:58,202 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:58,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:58,204 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:58,204 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:58,254 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:58,470 INFO L146 ILogger]: Checked inductivity of 315 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:18:58,470 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:58,471 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:18:58,480 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:26,495 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:19:26,495 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,515 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:19:26,519 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:26,557 INFO L146 ILogger]: Checked inductivity of 315 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:19:26,583 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:26,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:19:26,584 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:19:26,584 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:19:26,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:26,584 INFO L146 ILogger]: Start difference. First operand 172 states and 181 transitions. Second operand 9 states. [2019-05-23 11:19:27,132 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:27,133 INFO L146 ILogger]: Finished difference Result 367 states and 393 transitions. [2019-05-23 11:19:27,133 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:19:27,133 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 167 [2019-05-23 11:19:27,134 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:27,135 INFO L146 ILogger]: With dead ends: 367 [2019-05-23 11:19:27,135 INFO L146 ILogger]: Without dead ends: 217 [2019-05-23 11:19:27,137 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:27,137 INFO L146 ILogger]: Start minimizeSevpa. Operand 217 states. [2019-05-23 11:19:27,148 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 217 to 199. [2019-05-23 11:19:27,149 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:19:27,150 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 208 transitions. [2019-05-23 11:19:27,150 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 208 transitions. Word has length 167 [2019-05-23 11:19:27,150 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:27,150 INFO L146 ILogger]: Abstraction has 199 states and 208 transitions. [2019-05-23 11:19:27,150 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:19:27,150 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 208 transitions. [2019-05-23 11:19:27,153 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:19:27,154 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:27,154 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:27,154 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:27,155 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:27,155 INFO L146 ILogger]: Analyzing trace with hash 1063353880, now seen corresponding path program 6 times [2019-05-23 11:19:27,155 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:27,155 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:27,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,156 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:27,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,228 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,387 INFO L146 ILogger]: Checked inductivity of 459 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:19:27,387 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:27,387 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:19:27,396 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:47,730 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:19:47,730 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,748 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:19:47,751 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:47,865 INFO L146 ILogger]: Checked inductivity of 459 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:19:47,888 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:47,889 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2019-05-23 11:19:47,889 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:19:47,889 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:19:47,890 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:47,890 INFO L146 ILogger]: Start difference. First operand 199 states and 208 transitions. Second operand 12 states. [2019-05-23 11:19:48,627 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:48,628 INFO L146 ILogger]: Finished difference Result 427 states and 462 transitions. [2019-05-23 11:19:48,628 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:19:48,628 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 194 [2019-05-23 11:19:48,629 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:48,630 INFO L146 ILogger]: With dead ends: 427 [2019-05-23 11:19:48,630 INFO L146 ILogger]: Without dead ends: 253 [2019-05-23 11:19:48,631 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:48,632 INFO L146 ILogger]: Start minimizeSevpa. Operand 253 states. [2019-05-23 11:19:48,644 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 253 to 253. [2019-05-23 11:19:48,644 INFO L146 ILogger]: Start removeUnreachable. Operand 253 states. [2019-05-23 11:19:48,646 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 253 states to 253 states and 262 transitions. [2019-05-23 11:19:48,646 INFO L146 ILogger]: Start accepts. Automaton has 253 states and 262 transitions. Word has length 194 [2019-05-23 11:19:48,646 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:48,646 INFO L146 ILogger]: Abstraction has 253 states and 262 transitions. [2019-05-23 11:19:48,646 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:19:48,647 INFO L146 ILogger]: Start isEmpty. Operand 253 states and 262 transitions. [2019-05-23 11:19:48,651 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 249 [2019-05-23 11:19:48,651 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:48,651 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:48,652 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:48,652 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:48,652 INFO L146 ILogger]: Analyzing trace with hash -797961320, now seen corresponding path program 7 times [2019-05-23 11:19:48,652 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:48,652 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:48,653 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:48,654 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:48,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:48,705 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:48,908 INFO L146 ILogger]: Checked inductivity of 828 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2019-05-23 11:19:48,908 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:48,908 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:19:48,917 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:48,969 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:48,971 INFO L146 ILogger]: Trace formula consists of 346 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:19:48,973 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:49,018 INFO L146 ILogger]: Checked inductivity of 828 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2019-05-23 11:19:49,038 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:49,038 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:19:49,039 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:19:49,039 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:19:49,039 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:49,039 INFO L146 ILogger]: Start difference. First operand 253 states and 262 transitions. Second operand 12 states. [2019-05-23 11:19:49,644 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:49,644 INFO L146 ILogger]: Finished difference Result 520 states and 546 transitions. [2019-05-23 11:19:49,646 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:19:49,647 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 248 [2019-05-23 11:19:49,647 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:49,651 INFO L146 ILogger]: With dead ends: 520 [2019-05-23 11:19:49,651 INFO L146 ILogger]: Without dead ends: 298 [2019-05-23 11:19:49,652 INFO L146 ILogger]: 0 DeclaredPredicates, 258 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:19:49,652 INFO L146 ILogger]: Start minimizeSevpa. Operand 298 states. [2019-05-23 11:19:49,671 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 298 to 280. [2019-05-23 11:19:49,672 INFO L146 ILogger]: Start removeUnreachable. Operand 280 states. [2019-05-23 11:19:49,673 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 280 states to 280 states and 289 transitions. [2019-05-23 11:19:49,674 INFO L146 ILogger]: Start accepts. Automaton has 280 states and 289 transitions. Word has length 248 [2019-05-23 11:19:49,675 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:49,675 INFO L146 ILogger]: Abstraction has 280 states and 289 transitions. [2019-05-23 11:19:49,675 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:19:49,675 INFO L146 ILogger]: Start isEmpty. Operand 280 states and 289 transitions. [2019-05-23 11:19:49,680 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 276 [2019-05-23 11:19:49,680 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:49,680 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:49,680 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:49,681 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:49,681 INFO L146 ILogger]: Analyzing trace with hash 1870366812, now seen corresponding path program 8 times [2019-05-23 11:19:49,681 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:49,681 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:49,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:49,682 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:49,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:49,748 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:49,978 INFO L146 ILogger]: Checked inductivity of 1053 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2019-05-23 11:19:49,978 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:49,979 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:19:49,990 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:50,058 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:50,058 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,060 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:19:50,063 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:50,246 INFO L146 ILogger]: Checked inductivity of 1053 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2019-05-23 11:19:50,278 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:50,278 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:19:50,279 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:50,279 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:50,280 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:50,280 INFO L146 ILogger]: Start difference. First operand 280 states and 289 transitions. Second operand 13 states. [2019-05-23 11:19:51,051 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:51,052 INFO L146 ILogger]: Finished difference Result 571 states and 597 transitions. [2019-05-23 11:19:51,052 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:51,052 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 275 [2019-05-23 11:19:51,053 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:51,055 INFO L146 ILogger]: With dead ends: 571 [2019-05-23 11:19:51,055 INFO L146 ILogger]: Without dead ends: 325 [2019-05-23 11:19:51,056 INFO L146 ILogger]: 0 DeclaredPredicates, 286 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:51,057 INFO L146 ILogger]: Start minimizeSevpa. Operand 325 states. [2019-05-23 11:19:51,064 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 325 to 307. [2019-05-23 11:19:51,065 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:19:51,066 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 316 transitions. [2019-05-23 11:19:51,066 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 316 transitions. Word has length 275 [2019-05-23 11:19:51,066 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:51,066 INFO L146 ILogger]: Abstraction has 307 states and 316 transitions. [2019-05-23 11:19:51,067 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:51,067 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 316 transitions. [2019-05-23 11:19:51,068 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 303 [2019-05-23 11:19:51,068 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:51,069 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:51,069 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:51,069 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:51,070 INFO L146 ILogger]: Analyzing trace with hash 1302448408, now seen corresponding path program 9 times [2019-05-23 11:19:51,070 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:51,070 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:51,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:51,071 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:51,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:51,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,385 INFO L146 ILogger]: Checked inductivity of 1305 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2019-05-23 11:19:51,386 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:51,386 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:19:51,395 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2